申请人:BASF Aktiengesellschaft
公开号:US04327215A1
公开(公告)日:1982-04-27
The present invention relates to a simplified process, which avoids organo-lithium intermediates, for the preparation of erythro-.alpha.-piperid-2-yl-2,8-bis-(trifluoromethyl)-quinolin-4-yl-metha nol, wherein 2,8-bis-(trifluoromethyl)-quinoline-4-carboxylic acid or a salt thereof is reacted with a pyrid-2-yl-magnesium halide to give pyrid-2-yl-2,8-bis-(trifluoromethyl)-quinolin-4-yl ketone in the manner of a Grignard reaction, and this product is hydrogenated, in a conventional manner, to give erythro-.alpha.-piperid-2-yl-2,8-bis-(trifluoromethyl)-quinolin-4-yl-metha nol.
本发明涉及一种简化的过程,避免有机锂中间体,用于制备α-吡啶-2-基-2,8-双-(三氟甲基)-喹啉-4-基-甲醇,其中2,8-双-(三氟甲基)-喹啉-4-羧酸或其盐与吡啶-2-基-镁卤化物反应,以Grignard反应的方式给出吡啶-2-基-2,8-双-(三氟甲基)-喹啉-4-基酮,然后该产物以常规方式被氢化,得到α-吡啶-2-基-2,8-双-(三氟甲基)-喹啉-4-基-甲醇。