Novel phosphinites and phosphonites of general formula:
where R2 is an electron-donating substituent, R, and R3 are electron-donating substituents or hydrogen atoms, provided that they are not both hydrogen atoms, or either R, or R3 forms part of a fused alicyclic ring with R2, R is alkyl or cycloalkyl, and n and m are integers, each being either 1 or 2, provided that (m + n) equals 3, and when n is 2. the substituents on each aromatic ring may be the same or different, and their use as catalysts for the dimerisation of acrylonitrile to give predominantly straight-chain C6 dimers.
通式如下的新型
亚膦酸盐和
亚膦酸盐
其中 R2 为电子奉献取代基,R 和 R3 为电子奉献取代基或氢原子,条件是它们不同时为氢原子,或 R 或 R3 与 R2 构成融合脂环的一部分,R 为烷基或环烷基,n 和 m 为整数,各为 1 或 2,条件是(m + n)等于 3,且当 n 为 2 时。每个芳香环上的取代基可以相同或不同,它们可用作
丙烯腈二聚化的催化剂,主要生成直链 C6 二聚物。