The Journal of Organic Chemistry

Synthesis of unsaturated lactones via palladium-catalyzed cyclization of alkenoic acids

RC Larock, TR Hightower

Index: Larock, Richard C.; Hightower, Timothy R. Journal of Organic Chemistry, 1993 , vol. 58, # 20 p. 5298 - 5300

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Citation Number: 193

Abstract

Synthesis of Unsaturated Lactones via Palladium-Catalyzed Cyclization of Alkenoic Acids ... Richard C. Larock* and Timothy R. Hightower Department of Chemistry, Iowa State University, Ames, Iowa 50011 ... Summary: Acyclic and cyclic, aliphatic or aromatic, 4- or 5-alkenoic acids cyclize in high yield to 5- or 6-membered unsaturated lactones using 5 mol % Pd(OAc)z, 2 equiv of NaOAc, and 1 atm of 02. The cyclization of alkenoic acids to ...