Preparation of RCM substrates for azepinoindole synthesis: reductive amination versus tetrahydro-γ-carboline formation
作者:M.-Lluïsa Bennasar、Ester Zulaica、Sandra Alonso
DOI:10.1016/j.tetlet.2005.09.109
日期:2005.11
Treatment of N-(phenylsulfonyl)-2-vinyl-3-indolecarbaldehydes with primary aliphatic amines under mild reductive amination conditions leads to tetrahydro-gamma-carbolines in high yield. The process can be suppressed by changing the protecting group at the indole nitrogen for a methoxymethyl group, thus allowing the preparation of RCM substrates for azepinoindole synthesis. (c) 2005 Elsevier Ltd. All rights reserved.