申请人:Director General, Agency of Industrial Science and Technology
公开号:EP0358129A1
公开(公告)日:1990-03-14
A crown ether compound is shown below and useful as a separating agent for chemical compounds.
(In the formula, A and B represent hydrogen atoms, straight chain or branched alkyl groups having 1-6 carbon atoms, allyl groups having 6-10 carbon atoms, or aralkyl groups having 7-9 carbon atoms. Although A and B may be different groups, it is preferable that they be the same.
R₁ represents a hydrogen atom, a straight chain or branched alkyl group having 1-20 carbon atoms, or preferably an alkyl group having 6-16 carbon atoms. R₁ may be bonded to any carbon atom on the cyclical ester group and its number is 1-12, and preferably 1-3. n represents an integer from 3-10, and preferably 4-8, with 5 or 6 being even more preferable.
In addition, R₂ and R₃ represent straight chain or branched alkyl groups having 1-30, and preferably 6-20 carbon atoms, or aryl groups having 6-18 carbon atoms, or aralkyl groups having 7-30 carbon atoms. The location of R₂ and R₃ may be anywhere other than the A and B substitution positions on the condensed ring, and although one of each of R₂ and R₃ is satisfactory, a maximum of 5 groups may be substituted. In addition, R₂ and R₃ may also be different.)
一种冠醚化合物如下所示,可用作化合物的分离剂。
(式中,A 和 B 代表氢原子、具有 1-6 个碳原子的直链或支链烷基、具有 6-10 个碳原子的烯丙基或具有 7-9 个碳原子的芳烷基。虽然 A 和 B 可以是不同的基团,但最好是相同的基团。
R₁ 代表氢原子、具有 1-20 个碳原子的直链或支链烷基,或最好是具有 6-16 个碳原子的烷基。R₁ 可与环酯基团上的任意碳原子键合,其数目为 1-12,优选 1-3。n 代表 3-10 之间的整数,优选 4-8,更优选 5 或 6。
此外,R₂ 和 R₃ 代表具有 1-30 个(优选 6-20 个)碳原子的直链或支链烷基,或具有 6-18 个碳原子的芳基,或具有 7-30 个碳原子的芳烷基。R₂ 和 R₃ 的位置可以是缩合环上 A 和 B 取代位置以外的任何位置,虽然 R₂ 和 R₃ 中各有一个是令人满意的,但最多可以取代 5 个基团。此外,R₂ 和 R₃ 也可以是不同的)。