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.
The first chemoselective synthesis of functionalized 3-vinylpyrroles
作者:Boris A Trofimov、Andrey P Demenev、Lyubov’ N Sobenina、Al'bina I Mikhaleva、Ol'ga A Tarasova
DOI:10.1016/s0040-4039(03)00679-8
日期:2003.4
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.
Reaction of Pyrrole Anions with Carbon Disulfide. Synthesis of Pyrrole-3-carbodithioates
作者:Boris A. Trofimov、Lubov' N. Sobenina、Al'bina I. Mikhaleva、Andrey P. Demenev、Ol'ga A. Tarasova、Igor' A. Ushakov、Sergey V. Zinchenko
DOI:10.1016/s0040-4020(00)00641-4
日期:2000.9
5-Disubstituted pyrroles react with carbondisulfide in the system KOH–DMSO with selective formation of pyrrole-3-carbodithioate anions from which pyrrole-3-carbodithioates were prepared by ethylation in 36–61% yield. From 2-methyl-5-phenyl(2-furyl- or 2-thienyl)pyrroles only pyrrole-3-carbodithioates are formed, with no isomeric pyrrole-4-carbodithioates being present. The reaction direction depends on pyrrole