申请人:Toray Industries, Inc.
公开号:US04271318A1
公开(公告)日:1981-06-02
An .omega.-lactam having 4-12 carbon atoms, an oligomer thereof or a ring-opened polymer or an .omega.-amino carboxylic acid corresponding thereto, is heated in the presence of water and a metallic carbonate compound to obtain a metallic salt of .omega.-amino carboxylic acid. Barium, calcium and lithium are the preferred metals. The resulting metal salt is converted to an amino Schiff base which may be used as a starting material for preparing an .alpha.,.omega.-diamino alkane which may or may not include an amino group as a side chain. This further produces a metallic carbonate compound. The metallic carbonate is returned and used again as a reagent for forming the metal salt of the .omega.-amino carboxylic acid to create a closed system.
在水和金属碳酸盐化合物的存在下,加热具有4-12个碳原子的ω-内酯、其寡聚体或开环聚合物或相应的ω-氨基羧酸,以获得ω-氨基羧酸的金属盐。钡、钙和锂是首选金属。所得的金属盐转化为氨基席夫碱,可用作制备α,ω-二氨基烷的起始材料,其中可能包括一个氨基作为侧链。这进一步产生了金属碳酸盐化合物。金属碳酸盐被回收并再次用作形成ω-氨基羧酸的金属盐的试剂,以创建一个封闭系统。