Chemistry Letters, Vol.30, No.12, 1210-1211, 2001
Rhodium(I)-catalyzed acylation of alkyne with acylsilane: Transformation of 5-or 6-alkynoylsilane to alpha-alkylidenecycloalkanone
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 alpha -alkylidenecycloalkanones by treatment with [RhCl(CO)(2)](2) in the presence of acetic acid via trans metallation between the acylsilane moiety and a rhodium(I) complex.