Bromine- and iodine-mediated oxidative dimerization of cyanothioacetamide derivatives: synthesis of new functionalized 1,2,4-thiadiazoles

The ( 2E,2 ′ E )-2,2′-(1,2,4-thiadiazole-3,5-diyl) bis [3-aryl(hetaryl)-2-cyanoprop-2-entioamides] were obtained by treating ( E )-3-aryl(hetaryl)-2-cyanoprop-2-entioamides or their [4 + 2] dimerization products, 6-amino-2,4-diaryl-3,5-dicyano-3,4-dihydro-2 H -thiopyran-3-carbothioamides, with bromi...

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