C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/645.5
C07C 43/257 (2006.01)
Patent
CA 1269674
Abstract of the Disclosure Disclosed is a process for preparing 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ethers represented by the following formula (I): Image (I) wherein R stands for a lower alkyl group, and X1 and X2 stand for a hydrogen atom or fluorine atom, which comprises subjecting a 3-phenoxybenzyl 2-(4- alkoxy-3-halogenophenyl)-2-methylpropyl ether or 3-phenoxybenzyl -2-(4-alkoxy-3,5-dihalogenophenyl)- 2-methylpropyl ether represented by the following formula (II): Image (II) wherein R stands for a lower alkyl group, X1 and X2 stand for a hydrogen atom or fluorine atom, and Y1 and Y2 stand for a hydrogen atom, chlorine atom, bromine atom or iodine atom, with the proviso that at least one of Y1 and Y2 is a chlorine atom, bromine atom or iodine atom, to dechlorination, debromination or deiodination by hydrogenation, wherein the dechlorination, debromi- nation or deiodination is carried out in the presence of a hydrogenation catalyst by using as a hydrogenative reducing agent a lower aliphatic alcohol and an alkali compound selected from the group comprising alkali metal hydroxides and alkaline earth metal hydroxides. According to this process, compounds of the formula (I) can be obtained in high yields with safety without using hydrogen.
512642
Asano Tamotsu
Horie Hironobu
Nishida Takeshi
Takagi Akinobu
Tamura Nobuyasu
Mitsui Chemicals Incorporated
Ridout & Maybee Llp
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