Synthesis of 4,5,6,7-Tetrahydro-1<i>H</i>-indole Derivatives Through Successive Sonogashira Coupling/Pd-Mediated 5-<i>endo</i>-<i>dig</i>Cyclization
作者:Ivan A. Andreev、Dmitry S. Belov、Alexander V. Kurkin、Marina A. Yurovskaya
DOI:10.1002/ejoc.201201417
日期:2013.2
A one-pot Sonogashira cross-coupling/5-endo-dig cyclization procedure leading to 2-aryl-4,5,6,7-tetrahydroindoles was developed. This short (only two steps from commercially available compounds) sequence avoids harsh conditions and expensive catalysts. Our procedure is highly tolerant to a range of functional groups (amino, nitro, carboxy, cyano, hydroxy, and bromo). A family of 21 tetrahydroindoles