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Synlett 1992; 1992(8): 629-630
DOI: 10.1055/s-1992-21435
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Radical Cyclization of Mesitylsulfonylhydrazones

Sunggak Kim* , Jin Rai Cho
  • *Department of Chemistry, Korea Advanced Institute of Science and Technology, Taejon 305-701, South Korea
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Publication Date:
08 March 2002 (online)

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Radical cyclization of mesitylsulfonylhydrazones provides a useful method for the formation of unsubstituted five- and six-membered cyclic compounds. Thus, diethyl 3-methyl-3-cyclopentene-1,1-dicarboxylate (2) was formed by reaction of diethyl 5-bromo-1-mesitylsulfonylhydrazono-5-hexene-3,3-dicarboxylate (1b) with tributyltin hydride and 2,2′-azobisisobutyronitrile in benzene.