申请人:MERRELL DOW PHARMACEUTICALS INC.
公开号:EP0170214A1
公开(公告)日:1986-02-05
1,3-Dihydro-4-pyridoyl-2H-imidazol-2-ones are prepared in a three step process by
a) reducing 1-pyridyl-1,3-deketo-2-oximinoalkanes to produce 1-pyridyl-1-hydroxy-2-amine-3-ketoalkanes;
b) reacting the thus produced hydroxyaminoketone with cyanate ion to produce a 1,3-dihydro-4-hydroxy(pyridyl)-methyl-2H-imidazol-2-one; and
c) oxidizing the thus produced hydroxymethyl compound to yield the desired product.
1,3-二氢-4-吡啶酰基-2H-咪唑-2-酮通过以下三步法制备而成
a) 还原 1-吡啶基-1,3-脱酮-2-氧亚氨基烷,生成 1-吡啶基-1-羟基-2-氨基-3-酮;
b) 将生成的羟基氨基酮与氰酸根离子反应,生成 1,3-二氢-4-羟基(吡啶基)-甲基-2H-咪唑-2-酮;以及
c) 氧化由此生成的羟甲基化合物,得到所需的产品。