A novel and efficient solid??state synthesis of s??triazolo[3,4??b]??1,3,4??thiadiazine derivatives has been reported. Twelve 3??alkyl??6??aryl??s??triazolo[3,4??b]??1,3,4??thiadiazine derivatives have been synthesized in excellent yields with short reaction time. ... A novel and efficient solid??state synthesis of s??triazolo[3,4??b]??1,3,4??thiadiazine derivatives has been reported. Twelve 3??alkyl??6??aryl??s ??triazolo[3,4??b]??1,3,4??thiadiazine derivatives have been synthesized in excellent yields ...