Method for the production of pyrrolidine-1,2-dicarboxylic acid-1-(phenyl(-amide))-2-(phenyl(-amide)) derivatives and 1-(phenylcarbamoyl)-pyrrolidine-2-carboxylic acid derivatives as intermediate products

摘要

Process for the preparation of compounds of the formula I in which R, R¹, R² and R³ are as defined in Patent claim 1, and compounds of the formula IV in which R and R¹ are as defined in Patent claim 1, are intermediates for the preparation of the compounds of the formula I.