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
探索了在露天条件下,葡萄糖在乙醇(无水)中部分还原CuSO 4所产生的混合Cu(I)-Cu(II)系统的催化效率。通过这种催化,杂环am与醛和炔烃的A 3偶联,5- exo-dig环异构化和质变转移的多组分级联反应提供了一种具有治疗意义的通用N-稠合咪唑的高效环保合成。不同的杂环am,其中几种已知的是反应性较差的,并且醛在该催化过程中是相容的。