A rhodium-catalyzed carbonylative transformation of alkyl halides under low pressure of CO has been developed. This robust catalyst system allows using phenols as the carbonylative coupling partner and, meanwhile, exhibits high functional group tolerance and good chemoselectivity. Substrates even with a large steric hindrance group or multiple reaction sites can be selectively converted into the desired
Comparisons of O-acylation and Friedel–Crafts acylation of phenols and acyl chlorides and Fries rearrangement of phenyl esters in trifluoromethanesulfonic acid: effective synthesis of optically active homotyrosines
Reactions involving phenol derivatives and acyl chlorides have to be controlled for competitive O-acylations and C-acylations (Friedel–Crafts acylations and Fries rearrangements) in acidic condition. The extent for these reactions in trifluoromethanesulfonic acid (TfOH), which is used as catalyst and solvent, is examined. Although diluted TfOH was needed for effective O-acylation, concentrated TfOH
SMALL MOLECULE PI 3-KINASE INHIBITORS AND METHODS OF THEIR USE
申请人:Nuss John N.
公开号:US20090060912A1
公开(公告)日:2009-03-05
Compounds having formula I are provided where the variables have the values described herein.
Pharmaceutical formulations include the compounds or pharmaceutically acceptable salts thereof and a pharmaceutically acceptable carrier and combinations with other agents. A method of treating a patient comprises administering a pharmaceutical formulation according to the invention to a patient in need thereof.
Method of catalytic crosslinking of polymers and two-pack composition used therein
申请人:ROHM AND HAAS COMPANY
公开号:EP0950669A2
公开(公告)日:1999-10-20
A method of crosslinking an oxidative polymer having oxidatively crosslinkable functional groups and a two-pack composition used therein. The oxidatively crosslinkable functional groups on the oxidative polymer are crosslinked by contacting the oxidative polymer with a catalytic amount of an oxidizing enzyme, such as horseradish peroxidase. The present invention is further directed to a two-pack coating composition which includes a polymeric component and a catalytic component, which are mixed together prior to use.
2,4,6-trisubstituted pyrimidines as phosphotidylinositol (PI) 3-kinase inhibitors and their use in the treatment of cancer
申请人:Novartis AG
公开号:EP2316831A1
公开(公告)日:2011-05-04
Compounds having formula I are provided where the variables have the values described herein.
Pharmaceutical formulations include the compounds or pharmaceutically acceptable salts thereof and a pharmaceutically acceptable carrier and combinations with other agents. These compounds are phosphotidylinositol 3-kinase (PI3K) inhibitors.
提供了具有式 I 的化合物,其中的变量具有本文所述的值。
药物制剂包括这些化合物或其药学上可接受的盐和药学上可接受的载体以及与其他制剂的组合。这些化合物是磷脂酰肌醇 3- 激酶(PI3K)抑制剂。