Rhodium(I)-Catalyzed Acylation of Alkyne with Acylsilane: Transformation of 5- or 6-Alkynoylsilane to <i>α</i>-Alkylidenecycloalkanone

Abstract

Abstract Rhodium(I)-catalyzed intramolecular acylation of alkynyl group proceeds by the use of acylsilanes having an alkynyl moiety. 5- and 6-Alkynoylsilanes are converted to α-alkylidenecycloalkanones by treatment with [RhCl(CO)2]2 in the presence of acetic acid via transmetallation between the acylsilane moiety and a rhodium(I) complex.