A one-pot three-component reaction for the preparation of highly functionalized tryptamines
摘要:
We have developed a general one-pot method to provide highly functionalized tryptamine derivatives, via a Fischer indole type pathway. In this article, we demonstrate optimal conditions for a one-pot indole synthesis, allowing for the synthesis of a broad scope of 2-methyl tryptamine derivatives and a precursor for the synthesis of the core structure of some akuammiline alkaloids. Additionally, further modification of the indole products is described. Published by Elsevier Ltd.
A one-pot three-component reaction for the preparation of highly functionalized tryptamines
作者:Se Jeong Yeo、Yongxiang Liu、Xiang Wang
DOI:10.1016/j.tet.2011.11.032
日期:2012.1
We have developed a general one-pot method to provide highly functionalized tryptamine derivatives, via a Fischer indole type pathway. In this article, we demonstrate optimal conditions for a one-pot indole synthesis, allowing for the synthesis of a broad scope of 2-methyl tryptamine derivatives and a precursor for the synthesis of the core structure of some akuammiline alkaloids. Additionally, further modification of the indole products is described. Published by Elsevier Ltd.
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.