Synthesis of 2-thioxo-6-trifluoromethyl-1,2-dihydropyridine-3-carbonitrile and ethyl 5-cyano-6-thioxo-1,6-dihydropyridine-2-carboxylate by the SNVin reaction
摘要:
Ethyl 5-cyano-6-thioxo-1,6-dihydropyridine-2-carboxylate and 2-thioxo-6-trifluoromethyl-1,2-dihydropyridine-3-carbonitrile were obtained by the S(N)Vin reaction. The latter compound was used in the synthesis of 2-alkylsulfanyl-6-trifluoromethylpyridin-3-carbonitriles, 3-amino-5-trifluoromethylthieno[2,3-b]pyridin-2-carboxamide, and 7-thifluoromethyl-2-spirocyclopentane-1,2,3,4-tetrahydropyrido[2',3':2,3]thieno[4,5-d]pyrim-idin-4-one.