Reaction of Dipropynyltrimethylantimony(V) with Acid Chlorides in the Presence of Pd

Abstract

In the presence of catalytic amount of palladium (Pd(PPh₃)₄, PhCH₂PdCl(PPh₃)₂), coupling reaction of dipropynyltrimethylantimony(V)[1] with acid chlorides took place to give only propynyl ketones [4] without concomitant formation of methyl ketones. An initial step of the coupling reaction may be the oxidative addition of [1] to Pd(O) at the propynyl-antimony bond.