Oxidative addition of Bi–C bonds to Pt(0): reaction of Pt(PEt3)3 with cyclic organobismuth compounds

Abstract

The reaction of cyclic organobismuth compounds, 12-phenyl- and 12-chloro-5,6,7,12-tetrahydrodibenz[c,f][1,5]azabismocines, with Pt(PEt₃)₃ was examined. Oxidative addition of the exocyclic Bi–C bond to Pt(0) selectively took place in the reaction of the 12-phenyl derivative. Oxidative addition of the exocyclic Bi–Cl bond reversibly took place and was kinetically preferred, while endocyclic Bi–C bond oxidative addition products were thermodynamically favored and became the final products in the reaction of 12-chloro derivatives. These results demonstrate the oxidative addition of a Bi–C bond to a transition metal complex for the first time.