Abstract
Cyclocondensation of 2-[bis(methylthio)methylene]malononitrile and 2-amino-benzenthiol afforded 2-(benzo[d]thiazol-2-yl)malononitrile. This compound, on treatment with phosphorus pentasulfide, gave the corresponding thioamide derivative in a regioselective manner. Reaction of this compound with several α-bromocarbonyl compounds gave new 2-[(E)-(benzo[d]thiazol-2(3H)-ylidene)(cyano)methyl]thiazoles.
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