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Full-Text Articles in Physical Sciences and Mathematics
Development Of Ni-Catalyzed Alkene Dicarbofunctionalization Reactions, Shekhar Kc
Development Of Ni-Catalyzed Alkene Dicarbofunctionalization Reactions, Shekhar Kc
Chemistry and Chemical Biology ETDs
Alkenes serve as one of the most important feedstocks for organic synthesis, having two vicinal sites for bond formation. In alkenes, both vicinal sites can be functionalized with two reagents in a process commonly known as alkene difunctionalization, which results in the formation of two new bonds. A number of alkenes difunctionalization reactions, such as diamination, dioxygenation, carboamination and carbooxygenation, are known. However, difunctionalization of alkenes with two carbon-based entities, termed alkene dicarbofunctionalization, is relatively less common. Development of such a process could provide a powerful method to introduce two different carbon fragments across an alkene in a regioselective manner, …
Systematic Size Control In The Synthesis Of Zero-Valent Iron Nanoparticles, Grant C. Bleier
Systematic Size Control In The Synthesis Of Zero-Valent Iron Nanoparticles, Grant C. Bleier
Chemistry and Chemical Biology ETDs
A novel synthetic method for the production of highly magnetic, low size-dispersity nanoparticles through reversible magnetic agglomeration is introduced and studied in detail. Initially, a weakly coordinating surfactant (3-octadecyl-2,4-pentanedione) is employed to produce a wide range of nanoparticle sizes ranging from 8 to 20 nm in diameter. The kinetics faced in these reactions by cheap and widely available iron complex precursors can be avoided in this method with the introduction of thermodynamic control, which occurs in the form of a magnetic precipitation event that essentially halts nanoparticle growth. Utilizing this synthetic method, the length of the alkyl chain on the …