PROCESS FOR PREPARING TETRAHYDROQUINOLINE DERIVATIVES
申请人:Okamoto Masaki
公开号:US20090292125A1
公开(公告)日:2009-11-26
The present invention is to provide a process for preparing optically active tetrahydroquinoline derivatives which can be used for the treatment and/or prevention of diseases such as arteriosclerotic diseases, dyslipidemia and the like, and a process for preparing synthetic intermediates thereof.
Specifically, (2R,4S)-2-ethyl-6-trifluoromethyl-1,2,3,4-tetrahydroquinolin-4-ylamine or a salt thereof is prepared with fewer steps without using an optical resolution, and the optically active tetrahydroquinoline derivatives are obtained from the amine compound.
Process for preparing 3,3',5,5',6,6'-hexaalkyl-2,2'-biphenols, 3,3',4,4',5,5'-hexaalkyl-2,2'-biphenols and 3,3',4,4',5,5',6,6'-octaalkyl-2,2'-biphenols
申请人:INVISTA Technologies S.à.r.l.
公开号:EP2279993A1
公开(公告)日:2011-02-02
A process for making a compound of Formula (I) by oxidative coupling of a compound of the formula (11) in the presence of a molecular oxygen-containing gas and a copper-containing catalyst produced by contacting a copper halide salt with an organic diamine compound. Some compounds of the formula (I) are also claimed.
PROCESS FOR PREPARING 3,3',5,5',6,6'-HEXAALKYL-2,2'-BIPHENOLS, 3,3',4,4',5,5'-HEXAALKYL-2,2'-BIPHENOLS AND 3,3',4,4',5,5',6,6'-OCTAALKYL-2,2'-BIPHENOLS
申请人:Invista Technologies S.à.r.l.
公开号:EP1467958B1
公开(公告)日:2014-01-08
Polymeric phosphorus-containing compositions and their use in hydrocyanation, unsaturated nitrile isomerization and hydroformylation reactions
申请人:Invista Technologies S.à.r.l.
公开号:EP1905511B1
公开(公告)日:2013-03-27
PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYETHYLENE
申请人:Robert Dominique
公开号:US20130090400A1
公开(公告)日:2013-04-11
In a process for producing polyethylene having a molecular weight of at least 1×10
6
g/mol as determined by ASTM 4020, ethylene is contacted under polymerization conditions with a slurry of a catalyst composition comprising a particulate support having an average particle size, d50, of less than 58 microns and a Group 4 metal complex of a phenolate ether ligand carried by the support.