申请人:Ciba-Geigy Corporation
公开号:US04595766A1
公开(公告)日:1986-06-17
The invention relates to a novel process for the preparation of the optically pure 2S- or 2R-indolinecarboxylic acid of the formula ##STR1## and salts thereof. The process comprises forming the heterocyclic 5-membered ring in formula I from an open chain precursor by diastereoselective cyclization.
该发明涉及一种用于制备式中的光学纯2S-或2R-吲哚甲酸及其盐的新工艺。该工艺包括通过对映选择性环化将式中的杂环5-成员环从开链前体中形成。