Patent ID: 6730629
Filing Date: 2004-05-04
Classification: B01J,C07B,C07C,C07F

Abstract:
A phosphine-phospholane compound represented by the formula (1): wherein R1 represents hydrogen atom, a linear or branched alkyl group having 1 to 4 carbon atoms; R2 represents hydrogen atom or OR21, where R21 represents an alkyl group having 1 to 4 carbon atoms, a represents an integer of 1 to 2, b represents an integer of 1 to 3, the sum of a and b is 2 or 3, provided that at least one of R1 and R2 is not a hydrogen atom; R3, R4, R5 and R6 are the same or different, and each represents hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, and each of (1) R3 and R4, (2) R4 and R5, and (3) R5 and R6 may be combined to form a ring which may contain one or more oxygen atoms; and R7 and R8 are the same or different, and each represents (1) a linear or branched alkyl group having 1 to 6 carbon atoms, (2) a cycloalkyl group having 3 to 7 carbon atoms, (3) a perfluoroalkyl group, (4) a phenyl group, (5) a phenyl group having one or more substituents each selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkyl group having 1 to 6 carbon atoms which is substituted by one or more halogen atoms, an alkoxy group having 1 to 6 carbon atoms, and a halogen atom, (6) an aralkyl group having 7 to 12 carbon atoms, or (7) a ring-substituted aralkyl group.