申请人:SHIN-ETSU VINYL
ACETATE CO., LTD.
公开号:EP0699664A1
公开(公告)日:1996-03-06
Proposed are an N-(α-acyloxyethyl) compound, e.g., N-(α-acetoxyethyl)-2-pyrrolidone, which is a novel compound and can be converted into an industrially very important N-vinyl compound, e.g., N-vinyl-2-pyrrolidone, by a thermal decomposition reaction under relatively mild conditions as well as a method for the preparation of such an N-(α-acyloxyethyl) compound. The N-(α-acyloxyethyl) compound can be synthesized in a high yield by the addition reaction of an NH group-containing compound, e.g., 2-pyrrolidone, with a vinyl carboxylate, e.g., vinyl acetate, in the presence of an alkaline compound such as alkali metal hydroxides.
本发明提出了一种N-(α-乙酰氧乙基)化合物,例如N-(α-乙酰氧乙基)-2-吡咯烷酮,它是一种新型化合物,可在相对温和的条件下通过热分解反应转化为工业上非常重要的N-乙烯基化合物,例如N-乙烯基-2-吡咯烷酮,以及制备这种N-(α-乙酰氧乙基)化合物的方法。在碱金属氢氧化物等碱性化合物存在下,通过含 NH 基化合物(如 2-吡咯烷酮)与乙烯基羧酸酯(如乙酸乙烯酯)的加成反应,可以高产率合成 N-(α-乙酰氧乙基)化合物。