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Michael reaction of dimethyl (furan-2-ylmethylidene)malonate with 2-cyanoethanethio(seleno)amides and 4-methylmorpholine afforded 4-methylmorpholinium 6-amino-3,5-dicyano-4-(furan-2-yl)pyridine-2-thio(seleno)lates via exchange of the CH acid components. Aryl(hetaryl)methylidenemalononitriles reacted with cyanoethanethioamide under analogous conditions to give 3-aryl(hetaryl)-2-cyanoprop-2-enethioamides which were converted into 3-aryl(hetaryl)-2-(1,3-thiazol-2-yl)prop-2-enenitriles according to Hantzsch.
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Dyachenko et al. (2014) studied this question.
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