European Journal of Organic Chemistry

Titanium??Mediated Carboxylation of Alkynes With Carbon Dioxide

Y Six

Index: Six, Yvan European Journal of Organic Chemistry, 2003 , # 7 p. 1157 - 1171

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Citation Number: 23

Abstract

Abstract The regioselective carboxylation of nonactivated internal alkynes can be performed with carbon dioxide under atmospheric pressure using a simple procedure based on the chemistry of Sato-type diisopropyloxytitanacyclopropenes. Various polysubstituted vinylcarboxylic acids and butenolides can be prepared in this way. In addition, this paper describes an experimental protocol for the preparation of solutions of (η 2-cyclopentene) ...