Synthesis of Ammonium 5-Arylcarbamoyl-4-heteryl-6-methyl-3-cyano-1,4-dihydropyridine-2-thiolates and 4-Heteryl-5-carbamoyl-6-methyl-3-cyano-1,4-dihydropyridine-2-selenolates
作者:V. D. Dyachenko
DOI:10.1007/s11176-005-0248-4
日期:2005.3
The condensation of enamines derived from acetoacetanilides, heterocyclic aldehydes, and cyanothioacetamide yielded ammonium 5-arylcarbamoyl-5-heteryl-6-methyl-3-cyano-1,4-dihydropyridine-2-thiolates, which were subsequently used for the synthesis of substituted 2-alkylthio-1,4-dihydropyridines, 2-alkylthiopyridines, and thieno[2,3-b]pyridines. The reaction of acetoacetamide with heteroaromatic aldehydes and cyanoselenoacetamide in the presence of N-ethylmorpholine yielded N-ethylmorpholinium 4-heteryl-5-carbamoyl-6-methyl-3-cyano-1,4-dihydrolyridine-2-selenolates, from which substituted 2-alkylseleno-1,4-dihydropyridines were prepared.
由乙酰乙酰苯胺、杂环醛和氰硫基乙酰胺缩合生成的烯胺,产生氨基5-芳基氨基甲酰基-5-杂基-6-甲基-3-氰基-1,4-二氢吡啶-2-硫醇盐,随后用于合成取代的2-烷硫基-1,4-二氢吡啶、2-烷硫基吡啶和噻吩[2,3-b]吡啶。在N-乙基吗啉存在下,乙酰乙酰胺与杂芳香醛和氰硒基乙酰胺反应,生成N-乙基吗啉氨基4-杂基-5-氨基甲酰基-6-甲基-3-氰基-1,4-二氢吡啶-2-硒醇盐,从中制备了取代的2-烷硒基-1,4-二氢吡啶。