ORGANOHALOGEN COMPOUND HAVING CONJUGATED DOUBLE BOND, PROCESS FOR PREPARING ACETATE COMPOUND AND ALCOHOL COMPOUND THEREOF, AND COMPOUND USED TO SYNTHESIZE THE ORGANOHALOGEN COMPOUND
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20240174701A1
公开(公告)日:2024-05-30
The present invention relates to a process for preparing an organohalogen compound of the following general formula (5), wherein R
2
represents a linear, branched, or aromatic monovalent hydrocarbon group having 1 to 10 carbon atoms, n is the number of methylene groups of 1 to 10, and X
2
represents a halogen atom, the process comprising: obtaining a reaction product mixture by subjecting a (ω-halo-2-alkenyl)triphenylphosphonium halide compound of the following general formula (1), wherein n is as defined for the general formula (5) above, X
1
and X
2
represent, independently of each other, a halogen atom, and Ph represents a phenyl group, to a phosphorus ylide preparation reaction with an alkali metal alkoxide of the following general formula (3), wherein R
1
represents a linear or branched alkyl group having 1 to 6 carbon atoms, and M represents an alkali metal atom, in the presence of a lithium halide of the following general formula (2), wherein X
3
represents a halogen atom, and then subjecting the aforesaid reaction product mixture to a Wittig reaction with an aldehyde compound of the following general formula (4), wherein R
2
is as defined for the general formula (5) above, to form the organohalogen compound of the general formula (5) above.