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Full-Text Articles in Physical Sciences and Mathematics
Carbamothioates In The Synthesis Of Diaroyl Sulfides; Selectivity In The Addition Of Diaroyl Sulfides To Acetylenic And Ethylenic Π−Deficient Compounds, Ashraf A. Aly, Alan B. Brown, Alaa A. Hasaan, Kamal M. El-Shaieb, Tarek M. Bedair
Carbamothioates In The Synthesis Of Diaroyl Sulfides; Selectivity In The Addition Of Diaroyl Sulfides To Acetylenic And Ethylenic Π−Deficient Compounds, Ashraf A. Aly, Alan B. Brown, Alaa A. Hasaan, Kamal M. El-Shaieb, Tarek M. Bedair
Chemistry and Chemical Engineering Faculty Publications
Diaroyl sulfides were prepared in one-pot reaction from ethylenediamine and carbon disulfide, via reaction of in situ generated ethylene-bis- carbamodithioates with aroyl chlorides. The reaction of diaroyl sulfides with acetylenic and ethylenic π-deficient compounds such as dimethyl acetylenedicarboxylate, ethyl propiolate, (E)-1,4-diphenylbut-2-ene-1,4-dione and 1,4-diphenylbut-2-yne-1,4-dione afforded the corresponding thionylated products. NMR spectroscopic data of the isolated products were discussed. © ARKAT USA, Inc.
Hydrazinecarbothioamide Group In The Synthesis Of Heterocycles, Ashraf A. Aly, Alan B. Brown, Talaatt Ibrahim El-Emary, Ashraf M. Mohamed Ewas, Mohamed Ramadan
Hydrazinecarbothioamide Group In The Synthesis Of Heterocycles, Ashraf A. Aly, Alan B. Brown, Talaatt Ibrahim El-Emary, Ashraf M. Mohamed Ewas, Mohamed Ramadan
Chemistry and Chemical Engineering Faculty Publications
The review summarizes recent literatures dealing with hydrazinecarbothioamide group in thiocarbohydrazides and other derivatives including their physical and chemical properties along with their applications in the synthesis of heterocycles.
Web Based Classes For Enhancement Of Prelaboratory Lectures, Tiffany Hesser, Michael Collura
Web Based Classes For Enhancement Of Prelaboratory Lectures, Tiffany Hesser, Michael Collura
Chemistry and Chemical Engineering Faculty Publications
The use of web classes, such as Tegrity Campus1, as a supplement to pre laboratory reading or a replacement for pre laboratory lectures could become a standard tool in laboratory education protocol. In classes with multiple lab sections and instructors, pre laboratory lectures can lack consistency and it can be difficult to gauge the students’ level of preparation. With the ever increasing exposure to technology, students generally prefer information in a digital and multimedia form, rather than textbook readings. Therefore, this method can prove to better prepare students prior to laboratory experiments, increasing the overall understanding of the chemical reactions …
Systems Chemistry And Parrondo’S Paradox: Computational Models Of Thermal Cycling, Daniel C. Osipovitch, Carl Barratt, Pauline M. Schwartz
Systems Chemistry And Parrondo’S Paradox: Computational Models Of Thermal Cycling, Daniel C. Osipovitch, Carl Barratt, Pauline M. Schwartz
Chemistry and Chemical Engineering Faculty Publications
A mathematical concept known as Parrondo’s paradox motivated the development of several novel computational models of chemical systems in which thermal cycling was explored. In these kinetics systems we compared the rates of formation of product under cycling temperature and steady-sate conditions. We found that a greater concentration of product was predicted under oscillating temperature conditions. Our computational models of thermal cycling suggest new applications in chemical and chemical engineering systems.