申请人:Hoffmann-La Roche Inc.
公开号:US04544770A1
公开(公告)日:1985-10-01
Compounds of the formula: ##STR1## wherein R.sup.1 is a 2,6,6-trimethyl-1-cyclohexen-1-yl or 2,3,6-trimethylphenyl group, either of which may be unsubstituted or substituted by a hydroxy group or a protected hydroxy group, R.sup.2 is aryl, and X.sup.- is an anion are manufactured by hydrogenating a compound of the formula: ##STR2## wherein R.sup.1, R.sup.2 and X.crclbar. are as above, in an organic solvent or aqueous-organic solvent in the presence of a nickel-, palladium-, platinum-, cobalt-, rhodium-, iridium-, or ruthenium-containing catalyst. The process is suitable as an intermediate step in carotenoid and retinoid syntheses.
本发明提供一种制造化合物的方法,该化合物的化学式为:##STR1## 其中R.sup.1是2,6,6-三甲基-1-环己烯-1-基或2,3,6-三甲基苯基基团,两者都可以是未取代或被羟基或保护羟基取代的,R.sup.2是芳基,X.sup.-是阴离子。该方法通过在有机溶剂或水有机溶剂中,在镍、钯、铂、钴、铑、铱或钌催化剂的存在下,对化合物进行氢化来制造化合物。该过程适用于类胡萝卜素和视黄醇合成中的中间步骤。