申请人:Sanwa Kagaku Kenkyusho Co., Ltd.
公开号:US04198510A1
公开(公告)日:1980-04-15
A process for the preparation of carboxylic acids represented by a formula ##STR1## wherein R.sub.1 represents hydrogen atom or a lower alkyl radical, R.sub.2 represents hydrogen atom, lower alkyl or allyl radical and R.sub.3 represents phenyl, substituted phenyl, substituted naphthyl, dibenzofuranyl or substituted biphenyl. Following novel enamine and amidine compounds as intermediates for manufacturing the carboxylic acids and processes for the manufacture of said enamine and amidine compounds ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 represent the meanings as referred to and R.sub.4 represents dimethylamino, pyrrolidyl, piperidyl or morpholyl.
一种制备由公式##STR1##表示的羧酸的方法,其中R.sub.1代表氢原子或较低的烷基基团,R.sub.2代表氢原子、较低的烷基或烯丙基,R.sub.3代表苯基、取代苯基、取代萘基、二苯并呋喃基或取代联苯基。以下是作为制备羧酸的中间体的新型烯胺和胺醇化合物,以及制备所述烯胺和胺醇化合物的方法##STR2##其中R.sub.1、R.sub.2和R.sub.3代表所述的含义,R.sub.4代表二甲氨基、吡咯烷基、哌啶基或吗啉基。