Process and intermediates for the preparation of bicyclic triazoles.

摘要

The invention relates a new process for the preparation of bicyclic triazoles in which of general formula I <CHEM> in which R is C1-C6-alkyl or C1-C6-alkoxycarbonyl, which starts from the known 2-(4-chloro-2-fluorophenyl)-5,6,7,8-tetrahydro-1,2,4-triazolo[4,3-a]py ridin-3(2H)-one of formula II <CHEM> via the new chlorosulphonyl compound of formula III <CHEM> and via the new mercapto of general formula IV <CHEM> i