公开(公告)号：JP2000281692A

公开(公告)日：2000-10-10

申请号：JP2000077065

申请日：2000-03-17

Applicant: BASF AG

Inventor： MACKEWITZ THOMAS ,  ROEPER MICHAEL PROF DR ,  BERNHARD BREIT

IPC: C07F9/6568

Abstract: PROBLEM TO BE SOLVED: To obtain, by an economically feasible method, a phosphabenzen compound useful as a ligand in a transition metal complex used in olefin hydroformyation, by reacting the corresponding pyrylium salt with PH3 in the presence (absence) of a solvent or the like, under specific conditions. SOLUTION: This compound of formula I or II (R1 to R6 are each H, a group COOM or the like; M is H, an alkali metal or the like; W is a covalent bond, oxo or the like) [e.g. 2,6-bis(2,4-dimethylphenyl)-4-phenylphosphabenzene] is obtained by reacting (A) the corresponding pyrylium salt such as 2,6-bis(2,4- dimethylphenyl))-4-phenylpyrylium tetrafluoroborate, and (B) PH3, in the presence (absence) of a solvent or diluent such as n-butanol, after joining the components A and B together at a temp. of >=0 deg.C, in the temp. range of 0 to 200 deg.C, and about >=1 bar pressure, with neither acid catalyst nor base added.