Chemo- and Regioselective Assembly of Polysubstituted Pyridines and Isoquinolines from Isocyanides, Arynes, and Terminal Alkynes
作者:Feng Sha、Luling Wu、Xian Huang
DOI:10.1021/jo300072x
日期:2012.4.20
strategy for polysubstituted pyridines and isoquinolines with high chemo- and regioselectivity. In this methodology, 1-alkynyl imines act as the key compound to undergo a sequential alkynyl imine–allenyl imine isomerization/aza-Diels–Alder reaction/aromatization. In the first place, 1-alkynyl imines were formed in situ by a highly selective multicomponent reaction of isocyanides, arynes, and terminal alkynes
我们已经公开了具有高的化学和区域选择性的多取代的吡啶和异喹啉的通用且有效的合成策略。在这种方法中,1-炔基亚胺是关键的化合物,依次经历炔基亚胺-烯基亚胺的异构化/氮杂-狄尔斯-阿尔德反应/芳构化。首先,通过异氰酸酯,芳烃和末端炔烃的高选择性多组分反应原位形成1-炔基亚胺,并与另一分子芳烃或末端炔烃反应,以高效且原子经济的方式提供目标杂环产物方式。另一方面,我们试图通过其他方法制备1-炔基亚胺,使其经历相似的反应顺序,从而得到具有更宽范围的多取代吡啶和异喹啉。与第一种方法不同