The first chemoselective synthesis of functionalized 3-vinylpyrroles
摘要:
3-(1-Alkylthio-2-cyano-2-X-ethenyl)pyrroles (X=CN, CONH2, CO2Et) have been synthesized in 28-58% yields by the reaction of pyrrole-3-carbodithioates with CH-acids (malononitrile, cyanoacetamide, cyanoacetate) in the KOH-DMSO system. (C) 2003 Elsevier Science Ltd. All rights reserved.