Reaction of chloroacetylenephosphonates with 5-thiotetrazoles

摘要

l-Chloroacetylene-2-phosphonates react with 1-substituted 5-thio-1H-1,2,3,4-tetrazoles in anhydrous acetonitrile to form new fused heterocycles, 6-(dialkoxyphosphoryl)-3H-[1,3]thiazolo[3,2-d][1,2,3,4]tet-razol-7-ium chlorides, with a small quantity of Z-dialkyl (1,2-bis{[l-amino(methyl/phenyl)-1H-tetra-zol-5-yl]sulfanyl}ethenyl)phosphonates.