Identification of Binuclear Acyl Complexes as Intermediates in the CO-induced Conversion of (η^5-C_5H_5)Co(CO)(Me)_2 into Acetone, and (η^5-C_5H_5)Co(CO)(Et)_2 into Pentan-3-one

摘要

Studies of the carbonylation of [(η^5-C_5H_5)Co(CO)(R)]_2(R = Me, Et) at temperatures below ambient have revealed that these complexes may be converted into ketones via binuclear diacyl complexes [(η^5-C_5H_5)Co(CO)(COR)]_2; the postulated mechanistic pathway circumvents the earlier-identified intermediate (η^5-C_5H_5)Co(CO)R_2, and involves alkyl transfer from a Co^(II) acyl complex as a critical step.