Method for preparing .alpha.-(4-isobutylphenyl)propionic acid or its
申请人:Nippon Petrochemicals Co., Ltd.
公开号:US05097061A1
公开(公告)日:1992-03-17
A method for preparing .alpha.-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises a step A of forming p-isobutylstyrene from p-isobutylethylbenzene and a step B of forming .alpha.-(4-isobutylphenyl)propionaldehyde from p-isobutylstyrene or a step C of forming .alpha.-(4-isobutylphenyl)propionic acid or its alkyl ester from p-isobutylstyrene. Furthermore, a method for preparing said p-isobutylethylbenzene is also disclosed which comprises alkylating isobutylbenzene or 4-ethyltoluene with ethylene or propylene.