| abstract |
A process for the preparation of compounds of the general formula (3) or (8) which comprises reacting a compound (1) having an electron-withdrawing group with a compound (2) or (7) in the presence of both a catalyst comprising a compound containing a member selected from among Group 5 to 9 elements of the periodic table and oxygen. According to this process, compounds having alkyl or alkenyl at the α-position to the electron-withdrawing group or derivatives thereof can be prepared efficiently via catalytic radical addition. (1) (2) (7) (8) (wherein Y is an electron-withdrawing group; Rb to Rj are each hydrogen or an organic group; and Z is hydrogen or hydroxyl, or alternatively, Y, R?b, and Rc; Rd to Rg¿; and/or R?i and Rj¿ together with the carbon atom(s) adjacent thereto may form a ring.) |