Carbene Transfer Reactions from Chromium(0) to Gold(I): Synthesis and Reactivity of New Fischer-Type Gold(I) Alkenyl Carbene Complexes

The synthesis of new cationic alkenyl Fischer-type gold(I) complexes through a carbene transfer reaction of chromium and tungsten alkenyl Fischer carbene complexes with LAuICl complexes in the presence of AgSbF6 is reported. The stability of the resulting gold(I) carbene complexes highly depends on the nature of the ligand (L). We have used unstable gold(I) carbene complexes for developing some catalytic reactions of Fischer carbene complexes.