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Abstract
New 3-alkyl-1,3-dihydro-1-(2-mercaptophenyl)-4-methyl-2H-imidazolin-2-ones and the products of their oxidation-the corresponding disulfides are synthesized by ring transformation of 3-(2-oxopropyl)-2(3H)-benzothiazolone in reaction with primary amines. The supposed reaction mechanism is disscused. This reaction is a suitable one-stage method for the synthesis of 3,4-substituted 2H-imidazolones containing a 2-mercaptophenyl group.