Synthesis and reactions of 4-Hydroxy-2(1<i>H</i>)-pyridones with thienyl and pyridyl substituents in position 6 starting with azomethines and malonates
作者:Barbara Schnell
DOI:10.1002/jhet.5570360234
日期:1999.3
The reaction of 4 with substituted diethyl malonates 5a, or “magic malonates” (bis-2,4,6-trichlorophenylmalonates 5b) leads to 4-hydroxy-2(1H)-pyridones 6. The azomethines 4 are prepared via the Strecker compounds 3 starting with methyl ketones 1, anilines, and potassium cyanide. Chlorination of pyridones 6 with sulfuryl chloride leads to compounds 7 while nitration gives 9.
的反应4与取代的二乙基丙二酸酯5a中,或“魔术丙二酸酯”(双-2,4,6- trichlorophenylmalonates 5B)导致4-羟基-2(1 H ^) -吡啶酮6的甲亚胺4制备经由所述斯特雷克尔从甲基酮1,苯胺和氰化钾开始的化合物3。用硫酰氯氯化吡啶酮6会生成化合物7,而硝化则会生成9。