作者:Xu Zhang、Yu Zhou、Hengshuai Wang、Diliang Guo、Deju Ye、Yungen Xu、Hualiang Jiang、Hong Liu
DOI:10.1002/adsc.201100038
日期:2011.6
A protocol for the synthesis of the fused heterocyclic polycyclic compounds pyrrole[1,2‐a]benzimidazoles, piperidine[1,2‐a]benzimidazoles and oxa‐fused benzimidazoles using iodine and silver nitrate by an exo‐dig or endo‐dig cyclization pathway at room temperature has been developed. Silver nitrate is a key additive for improving the yield, and the improvement is a result of this additive eliminating
一种用于合成协议稠合杂环多环化合物的吡咯并[1,2一]苯并咪唑,哌啶并[1,2一]苯并咪唑和使用碘和硝酸银通过氧杂稠合的苯并咪唑外切挖或内切挖环化室温下的通路已经被开发出来。硝酸银是用于提高产量的关键添加剂和改进是这种添加剂消除碘离子的影响的结果(I -),否则会导致形成双碘副产物。进行涉及末端炔基和取代炔基的环化。进一步的官能化表明,所获得的碘衍生物是可能增加分子复杂性的潜在合成中间体。