申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0305012A2
公开(公告)日:1989-03-01
Catalytic compositions comprising
(a) a palladium compound,
(b) an anion of an acid having a pKa of less than 6, and
(c) a diphosphine of the general formula R₉R₁₀P-R-PR₁₁R₁₂, wherein R₉ to R₁₂ stand for carbocyclic hydrocarbyl groups or heteroaromatic substituents and R represents a bridging group containing at least one carbon atom in the bridge, with the proviso that at least one of R₉ to R₁₂ is a heteroaromatic substituent. The heteroaromatic substituent should contain one or more O, S and/or N-atoms in a five or six-membered ring, which ring is bound to the P-atom by a carbon ring-atom.
The catalysts are active in the preparation of linear alternating polyketones.
催化组合物,包括
(a) 钯化合物
(b) pKa 小于 6 的酸阴离子,和
(c) 通式为 R₉R₁₀P-R-PR₁₁R₁₂的二膦,其中 R₉ 至 R₁₂ 代表碳环烃基或杂芳族取代基,R 代表在桥中至少含有一个碳原子的桥基、但 R₉ 至 R₁₂ 中至少有一个是杂芳烃取代基。杂芳香族取代基应包含一个或多个 O、S 和/或 N 原子的五元或六元环,该环通过碳环原子与 P 原子结合。
这些催化剂在制备线性交替聚酮化合物方面具有活性。