CuSO<sub>4</sub>–Glucose for in Situ Generation of Controlled Cu(I)–Cu(II) Bicatalysts: Multicomponent Reaction of Heterocyclic Azine and Aldehyde with Alkyne, and Cycloisomerization toward Synthesis of N-Fused Imidazoles
作者:Sankar K. Guchhait、Ajay L. Chandgude、Garima Priyadarshani
DOI:10.1021/jo3003024
日期:2012.5.4
ethanol (nonanhydrous) under open air has been explored. With this catalysis, the multicomponent cascade reaction of A3-coupling of heterocyclic amidine with aldehyde and alkyne, 5-exo-dig cycloisomerization, and prototropic shift has afforded an efficient and eco-friendly synthesis of therapeutically important versatile N-fused imidazoles. Diverse heterocyclic amidines, several of which are known to