Metallized mesoporous silicate and method of oxidation with the same
申请人:Hagiya Koji
公开号:US20050090688A1
公开(公告)日:2005-04-28
A metallized mesoporous silicate which is obtained by (i) reacting (a) either a metal peroxide obtained by the reaction of an aqueous hydrogen peroxide solution with at least one metal or metal compound selected from the group consisting of the following 1) to 4) 1) tungsten 2) molybdenum 3) vanadium 4) compounds comprising 4
a
) any of tungsten, molybdenum, and vanadium and 4
b
) at least one element selected from Groups
13
to
16
(excluding oxygen) or a solution of the metal peroxide with (b) a silicon compound in the presence of an alkylamine or a quaternary ammonium salt and separating the resultant silicate; and a process for producing the metallized mesoporous silicate. Also provided is a method of organic synthesis with the silicate.
Method for producing an asymmetric biaryl derivative
申请人:IHARA CHEMICAL INDUSTRY Co., Ltd.
公开号:EP0571770A1
公开(公告)日:1993-12-01
A method for producing an asymmetric biaryl derivative which comprises dehalogenocoupling halogenated benzene derivatives, wherein a bromobenzene derivative of the formula:
wherein R is a lower alkyl group or a lower alkoxy group, which is attached at the 3- or 4-position, and a 2-chlorobenzene derivative of the formula:
wherein R' is a cyano group or an alkoxycarbonyl group, are reacted in pyridine in the presence of triphenylphosphine, an anhydrous nickel compound and a reducing metal to obtain an asymmetric biaryl derivative of the formula:
wherein R and R' are as defined above, and R is attached at the 3- or 4-position.
METALLIZED MESOPOROUS SILICATE AND METHOD OF OXIDATION WITH THE SAME
申请人:Sumitomo Chemical Company, Limited
公开号:EP1473275A1
公开(公告)日:2004-11-03
A metallized mesoporous silicate which is obtained by (i) reacting (a) either a metal peroxide obtained by the reaction of an aqueous hydrogen peroxide solution with at least one metal or metal compound selected from the group consisting of the following 1) to 4) 1) tungsten 2) molybdenum 3) vanadium 4) compounds comprising 4a) any of tungsten, molybdenum, and vanadium and 4b) at least one element selected from Groups 13 to 16 (excluding oxygen) or a solution of the metal peroxide with (b) a silicon compound in the presence of an alkylamine or a quaternary ammonium salt and separating the resultant silicate; and a process for producing the metallized mesoporous silicate. Also provided is a method of organic synthesis with the silicate.
METHOD FOR SYNTHESIZING O-DIPHENYLPHOSPHINO BENZOIC ACID
申请人:Sinomax Chemical Technology Co., Ltd
公开号:EP2383275A1
公开(公告)日:2011-11-02
The present invention relates to a method for synthesis of o-diphenylphosphinobenzoic acid which includes the steps as follows: using chlorodiphenylphosphine as starting material, chlorodiphenylphosphine and alkali metal are added to the solvent to conduct cracking, which produces a diphenyl phosphine alkali metal salt, then o-chlorobenzoic acid salt or o-chlorobenzoic acid ester is added to conduct coupling reaction to produce diphenylphosphinobenzoic acid salt or diphenylphosphinobenzoic acid ester, o-diphenylphosphinobenzoic acid is obtained after hydrolysis. o-diphenylphosphinobenzoic acid can be prepared under atmospheric pressure at tempreture above 0°C by using the present method. The method is safe and stable to operate and can save a lot of energy, thus being suitable for large-scale production.
Procatalysts, catalyst systems, and use in olefin polymerization
申请人:——
公开号:US20010025005A1
公开(公告)日:2001-09-27
There are described solid procatalysts, catalyst systems incorporating the solid procatalysts, and the use of the catalyst systems in olefin polymerization and interpolymerization.