申请人:Sandoz, Inc.
公开号:US04212804A1
公开(公告)日:1980-07-15
An improved process for the preparation of optionally substituted 2,3-indolinediones which are useful as intermediates in the preparation of compounds having pharmacological activity which comprises reacting a 3,1-benzoxazine with an alkali or alkaline earth metal cyanide or a tetra-(C.sub.1-4) alkylammonium cyanide to obtain a 2-imino-3-indolinone, which is then subjected to hydrolysis.
一种改进的制备可选择性取代的2,3-吲哚二酮的方法,该二酮在制备具有药理活性的化合物的中间体时有用,包括将3,1-苯并噁嗪与碱金属或碱土金属氰化物或四-(C.sub.1-4)烷基铵氰化物反应以获得2-亚氨基-3-吲哚酮,然后进行水解。