Abstract
Condensation reaction of 2-aminobenzothiazole and bromoacetone under the condition of boiling alcohol afforded a molecular compound of equimolecular of 2-amino-benzothiazole and 2-methylimidazo [2, 1-b] benzothiazole. When the reaction condition under standing at room temperature was adopted, 2-imino-3-acetonyl-2, 3-dihydrobenzothiazole was obtained. 3-Phenylimidazo [2, 1-b] benzothiazole was prepared from 1- (m-chlorophenyl) -2-mercapto-4-phenylimidazole and potassium amide in liquid ammonia. Imidazo [2, 1-b] benzothiazole was also prepared from 1- (m-chlorophenyl) -2-mercaptoimidazole.
