Bromination and Diazo-Coupling of Pyridinethiones; Microwave Assisted Synthesis of Isothiazolopyridine, Pyridothiazine and Pyridothiazepines
作者:Ayman M. S. Youssef、Mohamed E. Azab、Mohamed M. Youssef
DOI:10.3390/molecules17066930
日期:——
yl))bis(4-methyl-6-oxo-1,6-dihydropyridine-3-carboxamide), 2-hydroxy-5-methyl-4H-pyrido[3,2-e][1,3]-thiazine-4,7(8H)-dione and 2-arylmethylene-8-hydroxy-6-methyl-2,3,4,5-tetrahydropyrido-[3,2-f][1,4]thiazepine-3,5-diones have been prepared from 6-hydroxy-4-methyl-2-thioxo-2,3-dihydropyridine-3-carboxamide. Some of these compounds were prepared using microwave-assisted reaction conditions, that provided
异噻唑并吡啶类、吡啶并噻嗪类和吡啶并噻嗪类是具有重要生物活性的重要化合物。本文报道了使用传统化学方法和现代微波技术合成这些化合物。3-Bromo-6-hydroxy-4-methyl-2-thioxo-2,3-dihydropyridine-3-carboxamide, 5-arylazo-6-hydroxy-4-methyl-2-thioxo-1,2-dihydropyridine-3- carboxamides, 3,5-bis-arylazo-6-hydroxy-4-methyl-2-thioxo-2,3-dihydropyridine-3-caboxamide, 4-methyl-2,3,6,7-tetra-hydroisothiazolo[5, 4-b]-吡啶-3,6-二酮,2,2'-(亚甲基-双-(硫烷二基))双(4-甲基-6-氧代-1,6-二氢吡啶-3-甲酰胺),2-羟基-5-甲基-4H-吡啶并[3