Novel heterocycles derived from substituted aroylthioureas: Synthesis of 3,1-benzothiazin-4-ones, thieno[3,2-d][1,3]thiazin-4-ones and 1,2,4-thiadiazolo[2,3-a][3,1]benzothiazin-5-ones

Article abstract of DOI:10.1002/jhet.5570330225

A series of heterocyclic aroylthioureas has been prepared and investigated as starting materials for ring closure reactions. The formation of several new 3,1-benzothiazin-4-ones and thieno[3,2-d][1,3]thiazin-4-ones (via cyclocondensation reactions) is rep