Domino Reaction of Acyclic α,α-DialkenoylketeneS,S-Acetals and Diamines: Efficient Synthesis of Tetracyclic Thieno[2,3-b]thiopyran-Fused Imidazo[1,2-a]pyridine/Pyrido[1,2-a]pyrimidines
作者:Fushun Liang、Jiqing Zhang、Jing Tan、Qun Liu
DOI:10.1002/adsc.200606134
日期:2006.9
thiophene (ring B), a pyridine (ring C), and an imidazole or a pyrimidine (ring D) core, with a bridgehead nitrogen and an angular methyl group, were successfully synthesized by a catalyst-free, one-pot, two-component domino reaction of 4-(4-methyl-1,3-dithiol-2-ylidene)-1,7-bis(aryl/heteroaryl)hepta-1,6-diene-3,5-dione 2 and diamines. In this reaction, up to five new bonds were formed accompanied by the
一系列不同寻常的稠合四杂环化合物3,由噻喃(环A),噻吩(环B),吡啶(环C)和咪唑或嘧啶(环D)核组成,并带有桥头氮和角甲基是通过无催化剂的,一锅,两组分的4-(4-甲基-1,3-二硫醇-2-亚烷基)-1,7-双(芳基/杂芳基)的多米诺反应成功合成的)庚-1,6-二烯-3,5-二酮2和二胺。在该反应中,最多形成了五个新键,伴随着2的1,3-二硫醇环的CS键裂解,其中水是唯一的副产物。