Novel synthesis of cyclic compounds
    4.
    发明授权
    Novel synthesis of cyclic compounds 失效
    环状化合物的新型合成

    公开(公告)号:US4996315A

    公开(公告)日:1991-02-26

    申请号:US465682

    申请日:1990-01-16

    IPC分类号: C07D269/00 C07D273/01

    CPC分类号: C07D269/00

    摘要: Novel cyclic ester-amides having the formula: ##STR1## where R is an alkyl group having from 2 to 5 carbon atoms, and x ranges from 2 to 6 by reacting a polyethylene glycol monoamine having the formula NH.sub.2 --(CH.sub.2 CH.sub.2 O).sub.x --H, where x is as above, with at least one dicarboxylic acid, where the dicarboxylic acid is selected from the group consisting of glutaric, adipic, pimelic acids and mixtures thereof. The a molar ratio of polyethylene glycol monoamine to dicarboxylic acid should be about 1:1. Catalysts may be optionally used, and may include such compounds as titanium alkoxides; and zinc, manganese and antimony salts of carboxylic acids. This method is anticipated to be a useful step in a new preparation of valuable cyclic products.

    摘要翻译: 具有下式的新型环状酯 - 酰胺:其中R是具有2至5个碳原子的烷基,x在2-6范围内通过使具有式NH 2 - (CH 2 CH 2 O)x H的聚乙二醇单胺反应,其中 x是至少一种二羧酸,其中二羧酸选自戊二酸,己二酸,庚二酸及其混合物。 聚乙二醇单胺与二羧酸的摩尔比应为约1:1。 可以任选地使用催化剂,并且可以包括诸如烷氧基钛的化合物; 和羧酸的锌,锰和锑盐。 预计这种方法是有价值的循环产物的新制备中的有用步骤。