Transition Metal Ketene Complexes as Active Intermediate for Catalytic Carbonylation of Geminal Dibromoalkanes

Article abstract of DOI:10.1246/cl.1986.1607

MX2(PPh3)2 (M=Ni, Pd, Pt; X=Cl, Br) and Co2(CO)8 catalyze alkoxy- and aminocarbonylation of geminal dibromoalkanes, R¹R²CBr2 (R¹, R²=H and CH3).In the course of the catalysis, initial formation of the transition metal ketene complexes, M(CH2=C=O)L2, was followed by the reaction with alcohols to yield carbalkoxymethyl metal intermediate leading to esters.