申请人:KOHJIN CO. Ltd.
公开号:EP0619295A1
公开(公告)日:1994-10-12
A process for producing N-monosubstituted acrylamides in high yields without forming by-products. The process comprises preparing a β-dialkylamino-(methyl)propionic ester by the reaction of a (meth)-acrylic ester with a specified dialkylamine, converting the formed ester into an N-monosubstituted β-dialkylamino(methyl)propionamide by the reaction thereof with a primary amine in the presence of sodium methoxide, and thermally decomposing the amide under a reduced pressure.
一种高产率生产 N-单取代丙烯酰胺而不产生副产品的工艺。该工艺包括通过(甲基)-丙烯酸酯与特定的二烷基胺反应制备β-二烷基氨基-(甲基)丙酸酯,通过在甲醇钠存在下与伯胺反应将形成的酯转化为 N-单取代的β-二烷基氨基-(甲基)丙酰胺,并在减压下对酰胺进行热分解。