Photochemical Induced Orthomatalations. Isolation of and from RMn(CO)32(R+CH3 and H) and MeMn(CO)4P(OPh)3

Article abstract of DOI:10.1246/bcsj.56.2296

Photochemical reactions of RMn(CO)3L2 (R=H and CH3; L=P(OC6H5)3) and CH3Mn(CO)4L in benzene gave several kinds of orthometalated products, (x=0, 1, and 2).The reactions have been shown to proceed via ligand dissociation, CO and/or L, from the parent compounds and the resulting 16-electron intermediates activate a C-H bond of phenyl groups in triphenyl phosphite intramolecularly to yield orthometalated products.The results of photochemical reactions for MeMn(CO)3L2 and MeMn(CO)4L are compared with those of thermal reactions for these compounds.HMn(CO)4L was left intact by photochemical and thermal reactions.