Organometallic ruthenium complexes and related methods for the preparation of tetra-substituted and other hindered olefins
申请人:Berlin Jacob
公开号:US20070282148A1
公开(公告)日:2007-12-06
The invention relates to ruthenium alkylidene complexes having an N-heterocyclic carbene ligand comprising a 5-membered heterocyclic ring having a carbenic carbon atom and at least one nitrogen atom contained within the 5-membered heterocyclic ring, wherein the nitrogen atom is directly attached to the carbenic carbon atom and is substituted by a phenyl ring, and wherein the phenyl ring has a hydrogen at either or both ortho positions and is substituted at at least one ortho or meta position. The invention also relates to an olefin metathesis reactions and particularly to the preparation of tetra-substituted cyclic olefins via a ring-closing metathesis.
ORGANOMETALLIC RUTHENIUM COMPLEXES AND RELATED METHODS FOR THE PREPARATION OF TETRA-SUBSTITUTED AND OTHER HINDERED OLEFINS
申请人:BERLIN Jacob
公开号:US20120123133A1
公开(公告)日:2012-05-17
The invention relates to ruthenium alkylidene complexes having an N-heterocyclic carbene ligand comprising a 5-membered heterocyclic ring having a carbenic carbon atom and at least one nitrogen atom contained within the 5-membered heterocyclic ring, wherein the nitrogen atom is directly attached to the carbenic carbon atom and is substituted by a phenyl ring, and wherein the phenyl ring has a hydrogen at either or both ortho positions and is substituted at at least one ortho or meta position. The invention also relates to an olefin metathesis reactions and particularly to the preparation of tetra-substituted cyclic olefins via a ring-closing metathesis.
[EN] ORGANOMETALLIC RUTHENIUM COMPLEXES AND RELATED METHODS FOR THE PREPARATION OF TETRA-SUBSTITUTED AND OTHER HINDERED OLEFINS<br/>[FR] COMPLEXES ORGANOMETALLIQUES DE RUTHENIUM ET PROCEDES ASSOCIES POUR LA FABRICATION D'OLEFINES TETRA-SUBSTITUEES ET AUTRES OLEFINES EMPECHEES
申请人:MATERIA INC
公开号:WO2007075427A1
公开(公告)日:2007-07-05
[EN] The invention relates to ruthenium alkylidene complexes having an N-heterocyclic carbene ligand comprising a 5-membered heterocyclic ring having a carbenic carbon atom and at least one nitrogen atom contained within the 5-membered heterocyclic ring, wherein the nitrogen atom is directly attached to the carbenic carbon atom and is substituted by a phenyl ring, and wherein the phenyl ring has a hydrogen at either or both ortho positions and is substituted and at least one orthq or meta position. The invention also relates to an olefin metathesis reactions and particularly to the preparation of tetra-substituted cyclic olefins via a ring-closing metathesis. [FR] L'invention concerne des complexes de ruthénium alkylidène ayant un ligand carbène N-hétérocyclique comprenant un cycle hétérocyclique à 5 chaînons contenant un atome de carbone carbénique et au moins un atome d'azote au sein de cycle hétérocyclique à 5 chaînons, ledit atome d'azote étant directement relié à l'atome de carbone carbénique et étant substitué par un cycle phényle, ledit cycle phényle comportant un hydrogène à l'une ou l'autre, ou les deux positions ortho et étant substitué en au moins une position ortho ou méta. L'invention concerne également des réactions de métathèse d'oléfines et notamment la préparation d'oléfines cycliques tétra-substituées par métathèse par fermeture de cycle.