Hg(OTf)2-catalyzed direct vinylation of tryptamines and versatile applications for tandem reactions
作者:Haruki Mizoguchi、Hideaki Oikawa、Hiroki Oguri
DOI:10.1039/c2ob25236h
日期:——
We have developed a unique catalytic protocol for direct gem-vinylation of tryptamine derivatives employing Hg(OTf)2 as the optimum catalyst. The intermolecular vinylations with a series of aromatic acetylenes proceeded under ambient temperature at the C2 positions of indoles with high functional group tolerance. Based on the mechanistic insights, we further developed the tandem reactions successfully constructing a quaternary center.
我们开发了一种独特的催化方案,采用Hg(OTf)2作为最佳催化剂,实现色胺衍生物的直接双键乙烯化反应。在室温下,与一系列芳香炔烃进行分子间乙烯化反应,可在吲哚的C2位置高效进行,且对功能团具有高度容忍性。基于机理的深入理解,我们还成功开发了串联反应,成功构建了季碳中心。