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Rosales' "Mathematizing: An Emergent Math Curriculum Approach For Young Children" (Book Review), Lori Thornton
Rosales' "Mathematizing: An Emergent Math Curriculum Approach For Young Children" (Book Review), Lori Thornton
The Christian Librarian
No abstract provided.
Cartledge's "The Mediation Of The Spirit: Interventions In Practical Theology" (Book Review), Linda Poston
Cartledge's "The Mediation Of The Spirit: Interventions In Practical Theology" (Book Review), Linda Poston
The Christian Librarian
No abstract provided.
Effects Of An Integrated Electronic Health Record On An Academic Medical Center, Kenneth E. Koppenhaver Ii
Effects Of An Integrated Electronic Health Record On An Academic Medical Center, Kenneth E. Koppenhaver Ii
Walden Dissertations and Doctoral Studies
The debate about healthcare reform revolves around a triple aim of improving the health of populations, improving the patient experience, and reducing the cost of care. A major tool discussed in this debate has been the adoption of electronic health record (EHR) systems to record and guide care delivery. Due to low adoption rates and limited examples of success, the problem was a lack of understanding by healthcare organizations of how the EHR fundamentally changes an organization through the interactions of people, processes, and technology over time. The purpose of this case study was to explore the people, processes, and …
Kennedy's "The First American Evangelical: A Short Life Of Cotton Mather" (Book Review), Robert W. Caldwell Iii
Kennedy's "The First American Evangelical: A Short Life Of Cotton Mather" (Book Review), Robert W. Caldwell Iii
The Christian Librarian
A review of Kennedy, R. (2015). The first American Evangelical: A short life of Cotton Mather. Grand Rapids, MI: Eerdmans. 162 pp. $17.00. ISBN 9780802872111
High School Seniors' Knowledge About College And The Acquisition Of College-Readiness Skills, Karen Franklin Mcsherry
High School Seniors' Knowledge About College And The Acquisition Of College-Readiness Skills, Karen Franklin Mcsherry
Walden Dissertations and Doctoral Studies
Lack of college readiness, which affects persistence in college, is a problem for many students at a high school in New Jersey. Only 1 in 5 students in this school persist from first to second year in New Jersey public colleges and universities, and as many as 50% do not graduate in 4 years. This problem is important to study because low persistence may engender personal failure, familial debt, social stigma, and wasted public funds. Guided by Bandura's social learning theory, this qualitative case study addressed the lack of college readiness by exploring what high school students know about going …
Thorium-Based Mixed Oxide Fuel In A Pressurized Water Reactor: A Feasibility Analysis With Mcnp, Lucas Powelson Tucker
Thorium-Based Mixed Oxide Fuel In A Pressurized Water Reactor: A Feasibility Analysis With Mcnp, Lucas Powelson Tucker
Doctoral Dissertations
"This dissertation investigates techniques for spent fuel monitoring, and assesses the feasibility of using a thorium-based mixed oxide fuel in a conventional pressurized water reactor for plutonium disposition. Both non-paralyzing and paralyzing dead-time calculations were performed for the Portable Spectroscopic Fast Neutron Probe (N-Probe), which can be used for spent fuel interrogation. Also, a Canberra 3He neutron detector's dead-time was estimated using a combination of subcritical assembly measurements and MCNP simulations. Next, a multitude of fission products were identified as candidates for burnup and spent fuel analysis of irradiated mixed oxide fuel. The best isotopes for these applications were …
Ethical Behavior, Leadership, And Decision Making, Emmett Emery
Ethical Behavior, Leadership, And Decision Making, Emmett Emery
Walden Dissertations and Doctoral Studies
Ethical principles applied in organizations can broaden individual and corporate priorities beyond profit and shareholder enrichment. Ethical factors may influence leaders to make sound decisions to protect the organization from unethical behavior. The purpose of this study was to examine if a correlation exists between the independent variables of leadership and decision making, and the dependent variable of ethical behavior. Drucker's theory of management served as the theoretical framework. Data collection involved 2 survey instruments, the Authentic Leadership Questionnaire and the Moral Potency Questionnaire from 98 participants from retail businesses in the southwestern United States. The model as a whole …
Exploring Leader-Initiated Change Management For Adopting Cloud Services, Nancy Marie Landreville
Exploring Leader-Initiated Change Management For Adopting Cloud Services, Nancy Marie Landreville
Walden Dissertations and Doctoral Studies
Cloud technology requires a virtualized ubiquitous and scalable environment with shared resources. The general problem in cloud adoption is the absence of standardization across organizations. A standardized approach remained elusive since the inception of the Cloud First mandate. The purpose of this study was to explore leader-initiated change management (LICM) practices in cloud adoption within organizations. The theoretical framework included the classical theories of Kurt Lewin's organization change management, leader-member exchange, intentional change, and appreciative inquiry. A multiple case study design approach facilitated the exploration of LICM-value added practices to identify standardization in cloud adoption practices. Data collection included semistructured …
A Comparison Of Marketing Techniques Among Military Recruiters, Paul Vincent Mccullough Iii
A Comparison Of Marketing Techniques Among Military Recruiters, Paul Vincent Mccullough Iii
Walden Dissertations and Doctoral Studies
The U.S. Department of Defense spent $11 billion in enlistment and retention bonuses from 2006 to 2010, which had only a marginally positive effect on the enlistment rate for the Army. The case study addressed this business problem of recruiting by exploring marketing strategies successful recruiting professionals used to motivate individuals to join the military. The purpose of this study was to determine effective recruiting strategies. Therefore, it incorporated the conceptual framework of emergent strategy theory, which postulated the best strategies are neither completely planned nor completely random, but are rather an adaptation to changing dynamics and circumstances. The population …
Ability And Performance Comparisons Of Gifted Students In Homogeneous And Heterogeneous Settings, Cindy Rochelle Schwartz
Ability And Performance Comparisons Of Gifted Students In Homogeneous And Heterogeneous Settings, Cindy Rochelle Schwartz
Walden Dissertations and Doctoral Studies
To meet the educational needs and acceleration of talented and gifted (TAG) students, it is important to determine the best learning environment to afford optimal academic success during their educational experience. A study at a Bartow County school district in Georgia has been conducted in order to establish this best learning environment. This study investigated if Lexile scores (ability) and academic averages (performance) differ for 6th grade TAG students in homogeneous classes compared to TAG students in heterogeneous settings. Vygotsky's theory of social constructivism, which proposes that students need to feel socially and cognitively supported by their environment, was the …
The Impact Of A New Teacher Support System On Teacher Efficacy, Tonja Denise Simpson
The Impact Of A New Teacher Support System On Teacher Efficacy, Tonja Denise Simpson
Walden Dissertations and Doctoral Studies
Retaining novice teachers is a major concern for school districts across the United States. At an urban high school in a Southeastern state, over 30% of novice teachers hired over a 3-year period did not return after their first year of teaching. The purpose of the study was to examine novice teachers' perceptions of support received during their first year to determine how school-based support could increase novice teacher retention. The theoretical framework was Bandura's theory of self-efficacy and the concept of teacher efficacy espoused by Tschannen-Moran, Woolfolk-Hoy, and Hoy. The research questions focused on the perceptions of novice teachers …
"The Relationship Between Test Anxiety And Standardized Test Scores", Beth Ann Fulton
"The Relationship Between Test Anxiety And Standardized Test Scores", Beth Ann Fulton
Walden Dissertations and Doctoral Studies
The number of standardized achievement tests that students in the United States are required to take has increased significantly during the past decade. Researchers have found that test anxiety is often a problem related to the increase in testing. This correlational study investigated the relationship between anxiety levels of 50 4th grade students and their standardized test scores. Test anxiety questionnaires and pulse rates were used as a measure of the anxiety level of each of the 4th grade students just before the standardized test was administered, and standardized test scores were used as a measure of academic performance. The …
Electronic Warfare Receiver Resource Management And Optimization, William Metz
Electronic Warfare Receiver Resource Management And Optimization, William Metz
Walden Dissertations and Doctoral Studies
Optimization of electronic warfare (EW) receiver scan strategies is critical to improving the probability of surviving military missions in hostile environments. The problem is that the limited understanding of how dynamic variations in radar and EW receiver characteristics has influenced the response time to detect enemy threats. The dependent variable was the EW receiver response time and the 4 independent variables were EW receiver revisit interval, EW receiver dwell time, radar scan time, and radar illumination time. Previous researchers have not explained how dynamic variations of independent variables affected response time. The purpose of this experimental study was to develop …
Leadership Strategies For Retaining Healthcare Professionals, Kimberly Hulett
Leadership Strategies For Retaining Healthcare Professionals, Kimberly Hulett
Walden Dissertations and Doctoral Studies
Obtaining information about employee engagement and retention practices is vital for organizations. Affective organizational commitment reflects the extent to which organizational members are loyal and willing to work toward organizational objectives. In particular, affective organizational commitment holds important implications at all organizational levels (e.g., turnover rates, performance, and citizenship behavior). Using general systems theory and transformational leadership theory, the purpose of this single case study was to explore strategies used to improve employee engagement and retention from 5 senior leaders with hiring responsibilities from a midsize hospital in Austin, Texas that have been successful with employee engagement and retention strategies. …
Managing To Clear The Air: Stereotype Threat, Women, And Leadership, Crystal L. Hoyt, Susan E. Murphy
Managing To Clear The Air: Stereotype Threat, Women, And Leadership, Crystal L. Hoyt, Susan E. Murphy
Jepson School of Leadership Studies articles, book chapters and other publications
In this article, we explore the process and implications of stereotype threat for women in leadership, broadly construed. First, we provide a brief background on the phenomenon of stereotype threat generally. Next, we explore stereotype threat for women in leadership by reviewing a model of stereotype threat in leadership contexts that includes cues to stereotype threat, consequences of stereotype threat, and moderators of stereotype threat appraisals and responses. In this review, in addition to considering research focused squarely on leadership, we include the broader categories of research examining stereotype threat effects in the workplace and in tasks and domains relevant …
A Qualitative Phenomenological Study Of Employee Perceptions Of The Impact Of Layoffs, Linda Carrington
A Qualitative Phenomenological Study Of Employee Perceptions Of The Impact Of Layoffs, Linda Carrington
Walden Dissertations and Doctoral Studies
Millions of Americans were terminated from their employment in massive layoffs in 2013, which not only created outrage among employees. but also opened the door for retaliatory lawsuits. However, profitable companies are still engaged in restructuring and layoffs, which have a negative effect on employees, managers, and survivors. Such actions create mistrust in management and continue to plague the workforce and the economy. The purpose of this phenomenological study was to explore the impacts that layoffs and downsizing have on employees' trust, work performance, behavior, and health. Informed by Sarker's theory on management and employee trust, the research questions explored …
Women Entrepreneurs: Keys To Successful Business Development And Sustainability Beyond Five Years, Delores Duncan Foster
Women Entrepreneurs: Keys To Successful Business Development And Sustainability Beyond Five Years, Delores Duncan Foster
Walden Dissertations and Doctoral Studies
Women-owned businesses are one of the fastest growing entrepreneurial populations, accounting for 8 million of the 28 million small businesses in the United States. Small businesses fail at a rate of 55% by the 5th year of operation and women, who own over 30% of all small businesses, contribute significantly to the 55% small business failure rate. Using Schumpeter's framework, this single exploratory case study investigated how women entrepreneurial small business owners use strategies to sustain their business operation beyond 5 years. A purposeful sample identified 2 women salon small business owners located in the Macon, Georgia metro area. Data …
Electrochemistry-Coupled To Mass Spectrometry In Simulation Of Metabolic Oxidation Of Methimazole: Identification And Characterization Of Metabolites, Kudzanai Chipiso, Reuben H. Simoyi
Electrochemistry-Coupled To Mass Spectrometry In Simulation Of Metabolic Oxidation Of Methimazole: Identification And Characterization Of Metabolites, Kudzanai Chipiso, Reuben H. Simoyi
Chemistry Faculty Publications and Presentations
Methimazole (MMI), an antithyroid drug, is associated with idiosyncratic toxicity. Reactive metabolites resulting from bioactivation of the drug have been implicated in these adverse drug reactions. Mimicry of enzymatic oxidation of MMI was carried out by electrochemically oxidizing MMI using a coulometric flow-through cell equipped with a porous graphite working electrode. The cell was coupled on-line to electrospray ionization mass spectrometry (EC/ESI-MS). ESI spectra were acquired in both negative and positive modes. In acidic medium, ESI spectral analysis showed that the dimer was the main product, while in neutral and basic media, methimazole sulfenic acid, methimazole sulfinic acid and methimazole …
Synthesis And Evaluation Of A Novel N--P-Containing Oil-Based Fire-Retardant Plasticizer For Poly(Vinyl Chloride), Pu-You Jia, Guo-Dong Feng, Yun Hu, Yong-Hong Zhou
Synthesis And Evaluation Of A Novel N--P-Containing Oil-Based Fire-Retardant Plasticizer For Poly(Vinyl Chloride), Pu-You Jia, Guo-Dong Feng, Yun Hu, Yong-Hong Zhou
Turkish Journal of Chemistry
A novel N--P-containing soybean-oil-based fire-retardant plasticizer was synthesized using soybean oil methyl ester, 9,10-dihydro-9-oxa-phosphaphenanthrene-10-oxide (DOPO), and tris(2-hydroxyethyl) isocyanurate (THEIC). The structure was verified by Fourier transform infrared (FTIR) spectrometry and nuclear magnetic resonance (NMR) spectroscopy. The blends were characterized by thermogravimetric analysis (TGA), FTIR spectrometry, scanning electron microscopy (SEM), and dynamic mechanical analysis (DMA). TGA showed that the thermal stability of the blends were acceptable. DMA indicated that the plasticizer had good plasticity for PVC. The limiting oxygen index (LOI) of the blends ranged from 21.3 to 29.6. The flammability and thermal stability of PVC/THEIC-DOPO-ESOME was better than that of …
Adsorptive Features Of Polyacrylamide--Aluminosilicate Composites For Methylene Blue, Demet Baybaş, Ulvi̇ Ulusoy
Adsorptive Features Of Polyacrylamide--Aluminosilicate Composites For Methylene Blue, Demet Baybaş, Ulvi̇ Ulusoy
Turkish Journal of Chemistry
Polyacrylamide--montmorillonite (PAAm-Mt) and polyacrylamide--clinoptilolite (PAAm-Z) composites were prepared by cross-linked polymerization of acrylamide in dispersions of Mt and Z. The composites were characterized by FT-IR, SEM, XRD, CEC, and PZC analysis. The adsorptive features of PAAm-Mt and PAAm-Z for methylene blue (MB) were investigated by their relevance to initial dye concentration, temperature, contact time, PZC, and pH. The monolayer adsorption capacities were 0.14 and 0.08 mol kg$^{-1}$ for PAAm-Z and PAAm-Mt, respectively. The changes in pH of MB solution had an insignificant influence on their adsorption capacities. The values of enthalpy and entropy changes were positive ($\Delta $H$_{PAAm-Mt}$ = 7.6 …
Square Wave Voltammetric Determination Of Valproic Acid In Pharmaceutical Preparations, Ebru Türköz Acar, Ati̇ye Nur Onar
Square Wave Voltammetric Determination Of Valproic Acid In Pharmaceutical Preparations, Ebru Türköz Acar, Ati̇ye Nur Onar
Turkish Journal of Chemistry
The electrochemical behavior of valproic acid (VAL) was investigated using square wave voltammetry, cyclic voltammetry, and sampled direct current polarography and a new square wave voltammetric method was developed for determination of VAL in pharmaceutical preparations. VAL showed two reduction peaks at about --0.2 V and --0.8 V vs. Ag/AgCl 3 M KCl with a hanging mercury drop electrode in 0.05 M pH 3.3 Britton--Robinson (BR) buffer. These peaks were named peak I and peak II, respectively. The types of limiting current of both peaks were determined as diffusion controlled based on cyclic voltammetry studies. A linear calibration graph was …
Purification And Characterization Of Mitochondrial Thioredoxin Reductase Enzyme From Rainbow Trout (Oncorhynchus Mykiss) Liver And Investigation Of The In Vitro Effects Of Some Metal Ions On The Enzyme, İlknur Özgençli̇, Mehmet Çi̇ftci̇
Purification And Characterization Of Mitochondrial Thioredoxin Reductase Enzyme From Rainbow Trout (Oncorhynchus Mykiss) Liver And Investigation Of The In Vitro Effects Of Some Metal Ions On The Enzyme, İlknur Özgençli̇, Mehmet Çi̇ftci̇
Turkish Journal of Chemistry
Thioredoxin reductase (E.C 1.6.4.5.; TrxR) is an enzyme belonging to the flavoprotein family of pyridine nucleotide-disulfide oxidoreductases. In this study, mitochondrial TrxR enzyme was purified from rainbow trout mitochondria. Thanks to the 2 consecutive procedures (preparation of homogenate and 2',5'-ADP Sepharose 4B affinity chromatography), the enzyme, having the specific activity of 11.9 EU mg protein-1, was purified with a yield of 2.38{\%} and 672-fold. The purity of the enzyme was monitored and the molecular weight of its subunits was calculated as 70 kDa by SDS-PAGE. The native molecular mass of the enzyme was found to be approximately 151 kDa by …
Synthesis And Structural Properties Of $N$-3,4-(Dichlorophenyl)-3-Oxo-3- Phenyl-2-(Phenylcarbonyl)Propanamide And Its Cu(Ii) Complex, Ahmet Oral Sarioğlu, Tuğba Taşkin Tok, Mehmet Akkurt, Muhammad Nawaz Tahir, Mehmet Sönmez
Synthesis And Structural Properties Of $N$-3,4-(Dichlorophenyl)-3-Oxo-3- Phenyl-2-(Phenylcarbonyl)Propanamide And Its Cu(Ii) Complex, Ahmet Oral Sarioğlu, Tuğba Taşkin Tok, Mehmet Akkurt, Muhammad Nawaz Tahir, Mehmet Sönmez
Turkish Journal of Chemistry
A new N-carboxamide compound (3) was synthesized by the reaction of dibenzoylaceticacid-$N$-carboxyethyla\-mide (1) and 3,4-dichloroaniline (2). The $N$-(3,4-dichlorophenyl)-3-oxo-3-phenyl-2-(phenylcarbonyl) propanamide (3) subsequently reacted with Cu salt to produce its Cu(II) complex compound (4). The compounds were characterized by analytical and spectral methods. In addition, X-ray diffraction was performed to characterize and obtain detailed information about the structure of 3. The fully optimized geometries of compounds 3 and 4 were calculated at different basis sets by using the Gaussian09 (G09) software to investigate their 3D geometries and electronic structures. Comparisons between the calculated and experimental data including molecular structures, fundamental vibrational modes, …
Systematic Optimization Of Chemical Deposition Conditions For Synthesis Of Vanadium(V) Oxide Xerogels, Aksu Samet, Metodija Najdoski, Igor Kuzmanovski
Systematic Optimization Of Chemical Deposition Conditions For Synthesis Of Vanadium(V) Oxide Xerogels, Aksu Samet, Metodija Najdoski, Igor Kuzmanovski
Turkish Journal of Chemistry
We performed the optimization of conditions in chemical bath deposition using the design of experimental methodology. Factorial design (2$^{3})$ was used for finding the optimal conditions of preparing vanadium(V) oxide xerogel thin films with better electrochromic properties suitable for electrochemical applications. The thin films were prepared by acidification of NH$_{4}$VO$_{3}$ aqueous solution with chemical bath deposition. The factors and selected values we considered were as follows: the deposition time (10 and 20 min), the deposition temperature (70 and 80 $^{\circ}$C), and the mass of ammonium metavanadate (0.3 and 0.5 g). UV-vis spectrometry was used for recording the transmittance variance, $\Delta …
Liquid State $^{15}$N Nmr Studies Of $^{15}$N Isotope Labeled Phthalocyanines, Armağan Atsay, Ahmet Gül, Makbule Koçak
Liquid State $^{15}$N Nmr Studies Of $^{15}$N Isotope Labeled Phthalocyanines, Armağan Atsay, Ahmet Gül, Makbule Koçak
Turkish Journal of Chemistry
$^{15}$N labeled soluble metallo- and metal-free phthalocyanines are described for the first time. The complexes were synthesized starting from phthalic anhydride derivatives using 98{\%} $^{15}$N enriched urea. The effects of the substitution pattern, aggregation, and coordinated metal on $^{15}$N chemical shifts in liquid state NMR were studied.
Wittig--Horner Reagents: Powerful Tools In The Synthesis Of 5-And 6-Heterocyclic Compounds; Shedding Light On Their Application In Pharmaceutical Chemistry, Rizk Elsayed Khidre, Wafaa Mahmoud Abdou
Wittig--Horner Reagents: Powerful Tools In The Synthesis Of 5-And 6-Heterocyclic Compounds; Shedding Light On Their Application In Pharmaceutical Chemistry, Rizk Elsayed Khidre, Wafaa Mahmoud Abdou
Turkish Journal of Chemistry
This paper reviews literature over 25 years' activity on phosphoryl carbanion reagents and shows that these compounds are powerful tools in organic chemistry. The main target of this review is to outline some of the reactive peculiarities that make this class of compounds powerful tools in the synthesis of 5- and 6-heterocyclic compounds and/or substituted heterocycle phosphor esters. The importance of these latter compounds in pharmacology is also discussed.
Synthetic Approaches Towards The Synthesis Of Beta-Blockers (Betaxolol, Metoprolol, Sotalol, And Timolol), Furqan Ahmad Saddique, Ameer Fawad Zahoor, Muhammmad Yousaf, Muhammmad Irfan, Matloob Ahmad, Asim Mansha, Zulfiqar Ali Khan, Syed Ali Raza Naqvi
Synthetic Approaches Towards The Synthesis Of Beta-Blockers (Betaxolol, Metoprolol, Sotalol, And Timolol), Furqan Ahmad Saddique, Ameer Fawad Zahoor, Muhammmad Yousaf, Muhammmad Irfan, Matloob Ahmad, Asim Mansha, Zulfiqar Ali Khan, Syed Ali Raza Naqvi
Turkish Journal of Chemistry
Numerous efficient synthetic methodologies have been elaborated for the synthesis of $\beta $-blockers since the introduction of propranolol (a beta-blocker) in 1968. In this review, focus is placed on the more concise asymmetric and bioenzymatic synthetic approaches attempted towards the synthesis of beta-blockers (betaxolol, metoprolol, sotalol, and timolol).
Enhanced Delivery Of Epirubicin By Polyoxometalate-Based Magnetic Nanocarriers: Controlled Drug Loading And Ph-Sensitive Drug Release, Ezzat Rafiee, Nasibeh Rahpeyma
Enhanced Delivery Of Epirubicin By Polyoxometalate-Based Magnetic Nanocarriers: Controlled Drug Loading And Ph-Sensitive Drug Release, Ezzat Rafiee, Nasibeh Rahpeyma
Turkish Journal of Chemistry
A series of polyoxometalate-based magnetic nanoparticles were developed as novel carriers for anticancer drugs. Characterization of the nanoparticles was done by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), wavelength dispersive X-ray (WDX), and laser particle size analyzer. Epirubicin (EPI) was selected as a model drug. EPI loading efficiency, EPI loading content, and EPI release profiles were studied. Drug loading was controlled using acid-base titration since H$^{+}$ was released during the loading process. Based on these investigations, an efficient EPI delivery system was introduced. It showed high EPI-loading capacity (35.2 wt.{\%}) and high EPI loading …
Immobilization Of Laccase Onto A Porous Nanocomposite: Application For Textile Dye Degradation, Sedef İlk, Deni̇z Demi̇rcan, Semran Sağlam, Necdet Sağlam, Zakir M. O. Rzayev
Immobilization Of Laccase Onto A Porous Nanocomposite: Application For Textile Dye Degradation, Sedef İlk, Deni̇z Demi̇rcan, Semran Sağlam, Necdet Sağlam, Zakir M. O. Rzayev
Turkish Journal of Chemistry
Poly(MA-\textit{alt}-MVE)-$g$-PLA/ODA-MMT nanocomposite was prepared by self-catalytic interlamellar graft copolymerization of L-lactic acid (LA) onto poly(maleic anhydride-\textit{alt}-methyl vinyl ether) copolymer in the presence of octadecyl amine-montmorillonite (ODA-MMT) organoclay. FTIR, $^{1}$H ($^{13}$C) NMR, XRD, and SEM-TEM were utilized for characterizing the resultant nanocomposite. Laccase from \textit{Trametes versicolor} was immobilized onto the prepared nanocomposite by adsorption or covalent coupling. Decolorization of Reactive Red 3 from aqueous solution by laccase immobilized on the nanocomposite was studied in different conditions (pH, temperature, dye concentration, and reaction time) to investigate the decolorization activity with repeated use and storage. The results indicated that more than 77{\%} of …
Synthetic Access To Some New Benzothiazole-Based 1,3,4-Thiadiazole And 1,3-Thiazole Derivatives, Kamal M. Dawood, Eman A. Ragab, Korany A. Ali
Synthetic Access To Some New Benzothiazole-Based 1,3,4-Thiadiazole And 1,3-Thiazole Derivatives, Kamal M. Dawood, Eman A. Ragab, Korany A. Ali
Turkish Journal of Chemistry
1-(Benzothiazol-2-yl)-3-phenylthiourea\textbf{ 2} was prepared and treated with hydrazonoyl chlorides \textbf{3a}--\textbf{e }to yield the corresponding 5-(benzothiazol-2-ylimino)-1,3,4-thiadiazole derivatives \textbf{6a}--\textbf{e}, respectively. Reaction of the thiourea derivative \textbf{2} with ethyl 2-chloro-3-oxobutanoate \textbf{9} afforded the corresponding 2-(benzothiazol-2-ylimino)thiazole-5-carboxylate derivative \textbf{11}. The newly synthesized heterocyclic derivatives were confirmed from their elemental and spectral analyses.