Title: Method for producing diphosphine compound and intermediate for producing the same
Application Number: 02827906 Application Date: 2002.12.05
Publication Number: 1617876 Publication Date: 2005.05.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C07F9/50;C07B53/00
Applicant(s) Name: Takeda Chemical Industries Ltd. Address:
Inventor(s) Name: Goto Mitsutaka;Yamano Mitsuhisa
Attorney & Agent: zhao renlin zhang bengyuan
Abstract:
    A process for preparation of compounds represented by the general formula I or salts thereof: I [wherein R1a, R1b, R1c, R1d, R1e, R1f, R2a, R2b, R2c, R2d, R2e, and R2f are each independently hydrogen or the like and R3, R4, R5, R6, R7, R8, R9, and R10 are each independently hydrogen or the like], characterized by reacting a compound represented by the general formula II or a salt thereof: II [wherein X is a leaving group] with a phosphine-borane complex represented by the general formula III or a salt thereof: III in the presence of an amine and a nickel catalyst in a solvent.
Time: 9