2, 5-SELENOPHENE DERIVATIVES AND 2, 5-TELLUROPHENE DERIVATIVES
申请人:Jansen Axel
公开号:US20100216986A1
公开(公告)日:2010-08-26
The invention relates to 2,5-selenophene derivatives and 2,5-tellurophene derivatives, inter alia for use as components in liquid-crystal mixtures, and to liquid-crystal mixtures which comprise the compounds, and to liquid-crystal displays based on these mixtures. The invention furthermore relates to processes for the preparation of the compounds and to Se/Te-containing intermediates.
Carboxy-directed asymmetric hydrogenation of α-alkyl-α-aryl terminal olefins: highly enantioselective and chemoselective access to a chiral benzylmethyl center
A carboxy-directedasymmetrichydrogenation of α-alkyl-α-aryl terminal olefins was developed by using a chiral spiro iridium catalyst, providing a highly efficient approach to the compounds with a chiral benzylmethyl center. The carboxy-directedhydrogenation prohibited the isomerization of the terminal olefins, and realized the chemoselective hydrogenation of various dienes. The concise enantioselective
[EN] KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASE
申请人:DEVGEN NV
公开号:WO2005082367A1
公开(公告)日:2005-09-09
The invention provides the use of a compound or a composition comprising said compound for inhibiting the activity of at least one kinase, other than ROCK kinase, in vitro or in vivo, pharmaceutical and/or veterinary compositions comprising such compounds, medical and veterinary uses of such compounds and the compounds themselves.
A PdII‐catalyzedoxidative tandem cyclization was developed for the construction of fused 5,6‐bicyclic N, O‐heterocycles. This reaction was enabled by the combined use of a 3‐methylpyridine ligand and pentafluorobenzoic acid additive. A range of heterocyclic products with different substituents could be prepared in moderate to good yields via this methodology. Several transformations, including a scaled‐up
An efficient N-centered radical intramolecular cyclizationreaction of alkenyl amides induced by visible light was described. In this process, an alkenyl amide underwent 5-exo/6-endo cyclization to selectively yield two critical alkaloid structures, namely isoindolinones and isoquinolinones.