FREMGANGSMAATE FOR FREMSTILLING AV BICYKLISKE AMINOKARBOKSYLSYRER, SAMT MELLOMPRODUKT FOR FREMGANGSMAATEN

摘要

Compounds of the formula I …… in which n is 1, 2 or 3, R denotes acyl and R<1> denotes alkyl, cycloalkyl, aralkyl or another carboxyl protecting group are prepared by free-radical cyclisation of compounds of the formula II …… in which n, R and R<1> are as defined above and Hal denotes chlorine, bromine or iodine. Intermediates of this process and their use are also described.