Aryl Diazinyl Ketoximes: Synthesis and Configurational Assignment
摘要:
Preparation of a series of new aryl diazinyl ketoximes (7a,b - 12a,b) required as synthetic building blocks is described. Separation of the E/Z-isomers obtained was achieved by means of chromatography, their configuration was assigned using nmr techniques. Moreover, procedures for the synthesis of the starting ketones (1b - 6b) are given.
[EN] NOVEL HETEROCYCLIC COMPOUNDS AS INHIBITORS OF VANIN-1 ENZYME<br/>[FR] NOUVEAUX COMPOSÉS HÉTÉROCYCLIQUES UTILISÉS EN TANT QU'INHIBITEURS DE L'ENZYME VANINE-1
申请人:PFIZER
公开号:WO2016193844A1
公开(公告)日:2016-12-08
Compounds, pharmaceutically acceptable salts thereof, are disclosed wherein the compounds have the structure of Formula (I) as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
Overcoming Electron-Withdrawing and Product-Inhibition Effects by Organocatalytic Aerobic Oxidation of Alkylpyridines and Related Alkylheteroarenes to Ketones
作者:Hua Wang、Jie Liu、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.joc.9b03205
日期:2020.3.6
An organocatalyzed aerobic benzylic C-H oxidation of alkyl and aryl heterocycles has been developed. This transition metal-free method is able to overcome the electron-withdrawing effect as well as product-inhibition effects in heterobenzylic radical oxidation. A variety of ketones bearing N-heterocyclic groups could be prepared under relatively mild conditions with moderate to high yields.
system involving Er(III)-based chiral Lewisacid catalysis, Ir(III)-based photoredox catalysis, and bromide-radical-mediated hydrogen atom transfer. The introduction of a bulky and nonredox chiral Lewisacid through the photoredox pathway enables the radical addition process and inhibits the above competitive reactions. The visible-light-promoted catalytic asymmetric alkylation of heteroaryl-based ketones
Processes for the preparation of aryl-.beta.-diketones, arylpyrimidine
申请人:Zeneca Limited
公开号:US05925795A1
公开(公告)日:1999-07-20
This invention relates to processes for the preparation of aryl-.beta.-diketones and aryl-pyrimidine ketones. In addition, this invention relates to the preparation of aryl-.beta.-triketones and dimethyl aminomethylene .beta.-diketones, which are useful as crop protection intermediates.
Process for the Preparation of Phenyl 2-Pyrimidinyl Ketones and Their Novel Intermediates
申请人:Araki Koichi
公开号:US20080004444A1
公开(公告)日:2008-01-03
A process for the preparation of the compounds of the formula (I), or salts thereof, wherein R represents a hydrogen atom or difluoromethanesulfonyl, characterized in that compounds of the formula (II), or salts thereof, wherein R has the same definition as aforementioned, and n represents 0 or 1, are reacted in the presence of hydrogen peroxide and acetic acid.