PALLADIUM-CATALYZED DECARBONYLATION OF FATTY ACID ANHYDRIDES FOR THE PRODUCTION OF LINEAR ALPHA OLEFINS
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US20140155666A1
公开(公告)日:2014-06-05
The present invention is directed to methods of forming olefins, especially linear alpha olefins from fatty acids or anhydrides, each method comprising: contacting an amount of precursor carboxylic acid anhydride with a palladium catalyst comprising a bidentate bis-phosphine ligand in a reaction mixture so as to form an olefin in a product with the concomittant formation and removal of CO and water from the reaction mixture, either directly or indirectly, wherein the reaction mixture is maintained with a sub-stoichiometric excess of a sacrificial carboxylic acid anhydride, an organic acid, or both, said sub-stoichiometric excess being relative to the amount of the precursor carboxylic acid anhydride. The precursor carboxylic acid anhydride may be added to the reaction mixture directly or formed in situ by the reaction between at least one precursor carboxylic acid with a stoichiometric amount of the sacrificial acid anhydride.
[EN] PROCESS FOR THE PREPARATION OF VELPATASVIR<br/>[FR] PROCÉDÉ DE PRÉPARATION DE VELPATASVIR
申请人:MYLAN LABORATORIES LTD
公开号:WO2017060820A1
公开(公告)日:2017-04-13
The present disclosure provides a process for the preparation of velpatasvir intermediates of formula 5. The intermediates may be further converted to velpatasvir or pharmaceutically acceptable salts thereof.
Novel organic electroluminescent compounds and organic electroluminescent device using the same
申请人:Gracel Display Inc.
公开号:EP2062900A1
公开(公告)日:2009-05-27
The present invention relates to organic electroluminescent compounds represented by Chemical Formula (1), and electroluminescent devices comprising the same as host material.
Chemical Formula 1 L1L1M
The electroluminescent compounds according to the invention, when used as electroluminescent host material in an OLED, provide lowered operation voltage and significantly improved power efficiency as compared to conventional host material.
Quinazolinones of formulae 1a, 1b, 1c and 1d are disclosed. They are useful for treating cellular proliferative diseases and disorders associated with KSP kinesin activity.
Pharmaceutical compositions and a method for inhibiting the growth of tumor cells by administering a tumor cell growth-inhabiting amount of a bis [bis (diphenyl-phosphino) hydrocarbon]-, bis [bis (diethylphosphino) hydrocarbon]-, bis [bis (diphenylphosphino-diethylphosphino) hydrocarbon] gold (I), silver (I) or copper (I) complex or a tris [bis (diphenylphosphino) ethanel] dicopper (I) complex to an animal afflicted with said tumor cells.