PREPARATION OF 1-(SUBSTITUTED BENZYL)-5-TRIFLUOROMETHYL-2(1H)PYRIDONE COMPOUNDS AND SALTS THEREOF AND THEIR APPLICATIONS
申请人:Hu Gaoyun
公开号:US20120129859A1
公开(公告)日:2012-05-24
1-(substituted benzyl)-5-trifluoromethyl-2(1H)pyridone compounds and their pharmaceutical acceptable salts are disclosed. The preparation methods of the compounds and their salts and the use of the same for preparing the medicaments for treating fibrosis are also disclosed. New pyridine compounds and their salts are obtained from trifluoromethyl pyridone as starting material.
1-(SUBSTITUTED BENZYL)-5-TRIFLUOROMETHYL-2-(1H) PYRIDONE COMPOUNDS AND THEIR SALTS, THEIR PREPARATION METHODS AND USE THEREOF
申请人:Central South University
公开号:EP2474533A1
公开(公告)日:2012-07-11
1-(substituted benzyl)-5-trifluoromethyl-2(1H)pyridone compounds and their pharmaceutical acceptable salts are disclosed. The preparation methods of the compounds and their salts and the use of the same for preparing the medicaments for treating fibrosis are also disclosed. New pyridine compounds and their salts are obtained from trifluoromethyl pyridone as starting material.
We demonstrate a ligand- and glovebox-free regioselective direct C(3)–H imidation of 2-pyridones and also benzylic-type imidation of 2-pyridones bearing a methyl substituent employing Cu(OAc)2·H2O as the catalyst and N-fluorobenzenesulfonimide (NFSI) as an imidating reagent. A broad range of imidated 2-pyridone derivatives is made up to excellent yields. The present strategy operates well on a gram