Process for the preparation of organic compounds with manganese catalysts or the like

In a process for producing an organic compound having an alkyl or alkenyl group in the α-position of an electron attractive group, said organic compound being represented by following Formula (3) or (8):

• wherein Rb is a hydrogen atom or an organic group, Rc is a hydrogen atom or an organic group, Y is an electron attractive group, Rb, Rc, and Y may be combined with each other to form a ring with an adjacent carbon atom, each of Rd, Re, Rf, and Rg is independently a hydrogen atom or an organic group and Rd, Re, Rf, and Rg may be combined with each other to form a ring with one or two adjacent carbon atoms, Ri is a hydrogen atom or an organic group, Rj is a hydrogen atom or an organic group, and Ri and Rj may be combined with each other to form a ring with two adjacent carbon atoms, and Z is a hydrogen atom or a hydroxyl group, said process comprising the step of reacting a compound containing an electron attractive group represented by following Formula (1):
• wherein Rb, Rc, and Y are as defined above with a compound containing an unsaturated carbon-carbon bond represented by following Formula (2) or (7):
• wherein Rd, Re, Rf, Rg, Ri and Rj are as defined above, wherein the improvement comprises conducting said process in the presence of oxygen and a catalytic compound of a Group 7, 8, or 9 element of the Periodic Table of Elements.