(1,5-C) pyrimidine-2 (3H)-thione compound and 2,2-dithiobis (5-alkoxy (1,2,4) triazole-(1,5-C)-pyrimidine) and its use in the preparation of 2-chlorosulfonyl-5-alkoxy (1,2,4) triazolo (1,5-5-alkoxy 1,2,4 triazolo 1,5-c pyrimidine-2 (3H)-thione compounds and their use in the preparation of 2,2'-dithiobis triazolo 1,5-c-pyrimidine) and 2-chlorosufonyl-5-alkoxy 1,2,4 triazolo

摘要

1,5-c] pyrimidin-2 (3H)-thione compounds such as 5-ethoxy-7-fluoro [1,2,4] tri 5-c] pyrimidine-2 (3H)-thione was hydrogenated with hydrogen peroxide to obtain the novel 2,2''-dithiobis (5-alkoxy [ ] Pyrimidine) compounds such as 2,2''-dithiobis (5-ethoxy-7-fluoro [1,2,4] triazolo [1,5-c] pyrimidine, Subsequent chlorination of these intermediate compounds leads to 2-chlorosulfuric acid, which is useful for the preparation of 5-alkoxy [1,2,4] triazolo [l, 5-c] pyrimidine-5-alkoxy [1,2,4] triazolo [1,5-c] pyrimidine Compound (I), for example 2-chlorosulfonyl-5-ethoxy-7-fluoro [ , 2,4] triazolo [l, 5-c] pyrimidine.