PROCESS FOR PREPARING (1H-TETRAZOL-5-YL)TETRAZOLO [1,5-A] QUINOLINES ANDNAPHTHYRIDINES

摘要

A process according to reaction scheme (I), wherein n is 0, 1 or 2, R is C1-4 alkyl, C1-4 alkoxy, halogen, methylmercapto, methylsulfonyl, or two R's can be combined as methylenedioxy; B is either nitrogen or CH; and X is a suitable leaving group; M is a lower alkali metal cation; with the proviso that, when R is methylmercapto or methylsulfonyl, then n must be 1.