Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands; use as highly active, selective catalysts for olefin metathesis
申请人:Herrmann Anton Wolfgang
公开号:US20050107626A1
公开(公告)日:2005-05-19
The invention relates to a complex compound of ruthenium of the general structural formula I
in which X
1
and X
2
may be identical or different and represent an anionic ligand,
in which R
1
and R
2
are identical or different, but may also have a ring,
in which R
1
and R
2
represent hydrogen or/and a hydrocarbon group,
in which the ligand L
1
is a N-heterocyclic carbene and in which the ligand L
2
is a neutral electron donor, especially a N-heterocyclic carbene or an amine, imine, phosphane, phosphite, stibine, arsine, carbonyl compound, carboxyl compound, nitrile, alcohol, ether, thiol or thioether,
wherein R
1
, R
2
, R
3
and R
4
represent hydrogen or/and hydrocarbon groups.
The invention relates also to a process for the preparation of acyclic olefins having two or more carbon atoms or/and of cyclic olefins having four or more carbon atoms from acyclic olefins having two or more carbon atoms or/and from cyclic olefins having four or more carbon atoms by olefin metathesis reaction in the presence of at least one catalyst, wherein such a complex compound is used as catalyst and wherein R′
1
, R′
2
, R′
3
and R′
4
hydrogen or/and hydrocarbon groups.
该发明涉及一种钌的复合物,其一般结构式I,其中X1和X2可以相同也可以不同,并代表一个阴离子配体,其中R1和R2可以相同也可以不同,但也可以具有一个环,其中R1和R2代表氢或/和一个碳氢基团,其中配体L1是N-杂环卡宾,配体L2是一个中性电子给体,特别是N-杂环卡宾或胺、亚胺、膦、亚磷酸酯、锑烷、砷烷、羰基化合物、羧基化合物、腈、醇、醚、硫醇或硫醚,其中R1、R2、R3和R4代表氢或/和碳氢基团。该发明还涉及一种从具有两个或更多碳原子的非环烯烃或/和具有四个或更多碳原子的环烯烃制备非环烯烃或/和环烯烃的方法,通过烯烃交换反应在至少一种催化剂的存在下进行,其中使用这种复合物作为催化剂,其中R′1、R′2、R′3和R′4代表氢或/和碳氢基团。