申请人:ROHM AND HAAS COMPANY
公开号:EP0244130A2
公开(公告)日:1987-11-04
A process for making certain 6-aryl-2-methyl-pyridines, which are useful intermediates in the preparation of biologically active compounds, comprises
(a) subjecting a ketal of 1-hydroxy-1-aryl-5-hexanone to a Jones oxidation to yield a 1-aryl-1,5-hexanedione; or treating the 1-aryl-1-hydroxy-5-ketal-hexane with manganese dioxide in solvent to yield a ketone; and
(b) reacting the 1-aryl-1,5-hexanedione or the ketone from (a) with excess hydroxylamine hydrochloride in polar solvent at a temperature of from 50°C to 100°C.
一种制造某些 6-芳基-2-甲基吡啶的工艺,它们是制备生物活性化合物的有用中间体,包括 (a) 将 1-羟基-1-芳基-5-己酮的缩酮进行琼斯氧化,生成 1-芳基-1,5-己二酮; 或在溶剂中用二氧化锰处理 1-芳基-1-羟基-5-己酮,得到酮;以及 (b) 在 50°C 至 100°C 的温度下,在极性溶剂中使 1-芳基-1,5-己二酮或(a)中的酮与过量的盐酸羟胺反应。