A process for the preparation of a compound of the formula ##STR1## comprising reacting 1R, cis 2,2-dimethyl 3-(2-oxopropyl)-cyclopropane-1-carboxylic acid with an alkali metal, alkaline-earth metal or magnesium hypohalite, and oxidizing the 1R, cis 2,2-dimethyl 3-(hydroxy-carboxy-methyl)-cyclopropane-1-carboxylic acid or its salt or lactonic form thereof thus obtained with an oxidizing agent to obtain the compound of formula I and novel intermediates.
一种制备式为##STR1##的化合物的方法,包括将1R,顺式2,2-二甲基3-(2-氧代丙基)-
环丙烷-1-
羧酸与碱
金属、碱土
金属或
镁次卤酸盐反应,并将得到的1R,顺式2,2-二甲基3-(羟基-羧甲基)-
环丙烷-1-
羧酸或其盐或内酯形式与氧化剂氧化以获得式I的化合物和新的中间体。