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Synthesis 1999; 1999(3): 471-474
DOI: 10.1055/s-1999-3406
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Preparation of Pyrrole-2-carboxylates with Electron-Withdrawing Groups at the 4-Position

Hidemitsu Uno* , Masanori Tanaka, Takashi Inoue, Noboru Ono
  • *Advanced Instrumentation Center for Chemical Anaylsis, Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577, Japan; Fax +81(89)9 27 96 70; E-mail: uno@dpc.ehime-u.ac.jp
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Publication Date:
31 December 1999 (online)

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Reaction of α-trifluoromethyl, α-cyano, and α-ethoxycarbonyl alkenyl sulfones with ethyl isocyanoacetate in the presence of a base gave 4-substituted pyrrole-2-carboxylates in moderate to good yields.

pyrrole-2-carboxylate - trifluoromethyl - Barton-Zard reaction - alkenyl sulfones