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Pure Appl. Chem., 2008, Vol. 80, No. 5, pp. 1079-1087

Rhodium-catalyzed CO gas-free carbonylative cyclization using aldehydes

Tsumoru Morimoto, Masahiko Fujioka, Koji Fuji, Ken Tsutsumi and Kiyomi Kakiuchi

Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan

Abstract: A new protocol for CO gas-free carbonylation, in which aldehydes are used as a substitute for CO, is described. The protocol consists of two Rh-mediated processes; the Rh-mediated decarbonylation of aldehydes, which leads to the formation of Rh carbonyl, and subsequent Rh-catalyzed carbonylative cyclization utilizing the in situ formed Rh carbonyl species.