申请人:Chemische Fabrik Stockhausen GmbH
公开号:US04605740A1
公开(公告)日:1986-08-12
The present invention relates to a process for the production of N-substituted acrylic acid amides by conversion of 2-carboalkoxy-t-oxabicyclo(2,2,1)hept-5-enes with primary or secondary amines to 2-carboxamide-7-oxabicyclo(2,2,1)hept-5-enes and the thermal decomposition of the latter, preferably in the presence of Lewis acids and in a vacuum, to furane and N-substituted acrylic acid amides. The process according to the invention results in high purity N-substituted acrylic acid amides that are, in the main, free of bifunctional monomers which would disrupt the subsequent polymerization of the N-substituted acrylic acid amides by undesired cross-linking.
本发明涉及一种生产N-取代丙烯酸酰胺的方法,通过将2-碳酰基-t-氧杂双环(2,2,1)庚-5-烯与一级或二级胺转化为2-羧酰胺-7-氧杂双环(2,2,1)庚-5-烯,然后在热分解时,首选在路易斯酸的存在下,在真空条件下对其进行处理,以得到呋喃和N-取代丙烯酸酰胺。本发明的方法可获得高纯度的N-取代丙烯酸酰胺,主要不含双官能团单体,这些单体会通过不希望的交联破坏后续的N-取代丙烯酸酰胺的聚合。