SYNTHESIS OF 2-SUBSTITUTED 5-ARYLIDENETHIAZOLIN-4-ONES FROM α,β-UNSATURATED ACYL ISOTHIOCYANATES
α,β-Unsaturated acyl isothiocyanates react with N-methylaniline to give thioureas which, when treated with bromine in chloroform, afford benzothiazoline derivatives.Under the same reaction conditions primary amines, diethylamine,piperidine and morpholine