7153-60-8Relevant articles and documents
Kinetic and mechanistic studies of NEt3-catalyzed intramolecular aminolysis of carbamate
Sung, Kuangsen,Zhuang, Bo-Ren,Huang, Pin-Mei,Jhong, Sheng-Wei
, p. 4027 - 4033 (2008)
(Graph Presented) The mechanism of the NEt3-catalyzed intramolecular aminolysis of Z-1 in acetonitrile or aqueous acetonitrile solutions is suggested to involve rate-determining collapse of T ± through simultaneous H-abstraction and ethoxide expulsion of E2 process. The evidence for that includes the primary isotope effect of kH/k D, = 1.66 in acetonitrile, general-base catalysis in aqueous buffer solutions, salt effect, and the proposed water-stabilized rate-determining transition states (TS1 and TS2) in the water-titration experiments.
A multi-component reaction to 5-cyanouracils: Synthesis and mechanistic study
Zhuang, Bo-Ren,Hsu, Gien-Jow,Sung, Kuangsen
, p. 3399 - 3404 (2007/10/03)
Acetonitrile as a solvent, excess of primary amines as general bases, and a reflux condition make the multi-component reactions of (2-cyanoacetyl) carbamate 1, ethyl orthoformate, and primary amines form 5-cyanouracils 4a-c feasibly. Mechanistic studies o