Preparation of phosphorus-containing compounds useful in the preparation of biphosphine ligands
申请人:——
公开号:US20030109754A1
公开(公告)日:2003-06-12
This invention relates to processes for making phosphorus compounds R
2
P—X—PR
2
, R
2
P-M, R
2
P-L and R
3
P, and the novel cation R
2
P
+
(L)-X—P
+
(L)R
2
, where R represents an optionally substituted hydrocarbyl group, X represents a bridging group, L represents a leaving group and M represents an alkali metal atom. The invention relates further to a process for making a compound R
2
P-L from a compound R—H via a new process for making the compound R—Li followed by its reaction with a compound Hal
2
P-L. The compound R
2
P—X—PR
2
is a ligand suitable for making catalysts for copolymerizing carbon monoxide and a olefinically unsaturated compound.
本发明涉及制造磷化合物 R
2
P-X-PR
2
, R
2
P-M, R
2
P-L 和 R
3
P 以及新型阳离子 R
2
P
和加
(L)-X-P
+
(L)R
2
其中 R 代表任选取代的烃基,X 代表桥基,L 代表离去基团,M 代表碱金属原子。本发明还涉及一种制造化合物 R
2
P-L 的新工艺,该工艺是先用化合物 R-H 制得化合物 R-Li,然后与化合物 Hal
2
P-L 的反应。化合物 R
2
P-X-PR
2
是一种配体,适用于制造一氧化碳与烯烃不饱和化合物共聚的催化剂。