N-Heterocyclic Carbene Catalyzed Trifluoromethylation of Carbonyl Compounds
作者:Jinhua J. Song、Zhulin Tan、Jonathan T. Reeves、Fabrice Gallou、Nathan K. Yee、Chris H. Senanayake
DOI:10.1021/ol050568i
日期:2005.5.1
carbene (NHC) catalyzed trifluoromethylation reaction of carbonylcompounds was discovered. Both enolizable and nonenolizable aldehydes and alpha-keto esters undergo facile trifluoromethylation with TMSCF3 at room temperature in the presence of only 0.5-1 mol % of the commercially available NHC (1), providing CF3-substituted alcohols in good yields. Selective trifluoromethylation of aldehydes over ketones
Lewis base-catalyzed perfluoroalkylation of carbonyl compounds and aldimines with (perfluoroalkyl)trimethylsilanes (TMSCF3, TMSC2F5, and TMSC3F7) is described. The nitrogen- or oxygen-containing an...
[EN] BIARYL PYRAZOLES AS NRF2 REGULATORS<br/>[FR] BIARYL PYRAZOLES UTILISÉS COMME RÉGULATEURS DE NRF2
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2017060854A1
公开(公告)日:2017-04-13
The present invention relates to biaryl pyrazole compounds, methods of making them, pharmaceutical compositions containing them and their use as NRF2 regulators.
本发明涉及双芳基吡唑化合物、它们的制备方法、含有它们的药物组合物及其作为NRF2调节剂的应用。
A simple procedure for nucleophilic perfluoroalkylation of organic and inorganic substrates
作者:Viacheslav A Petrov
DOI:10.1016/s0040-4039(01)00447-6
日期:2001.5
mixture RfI and tetrakis(dimethylamino)ethylene is used for the nucleophilic perfluoroalkylation. The reaction of chlorotrimethylsilane and RfI/tetrakis(dimethylamino)ethylene in diglyme results in the formation of RfSi(CH3)3 isolated in 55–81% yield. The interaction of this system with organic electrophiles such as benzoyl and benzensulphonyl chlorides, aliphatic and aromatic aldehydes and activated
R f I和四(二甲基氨基)乙烯的混合物用于亲核全氟烷基化。氯三甲基硅烷与R f I /四(二甲基氨基)乙烯在二甘醇二甲醚中的反应导致形成R f Si(CH 3)3,产率为55-81%。该系统与有机亲电试剂(例如苯甲酰氯和苯磺酰氯,脂肪族和芳香族醛以及活化的酮)的相互作用导致相应缩合产物的形成,产率为24-62%。
Chemo- and Enantioselective Addition and β-Hydrogen Transfer Reduction of Carbonyl Compounds with Diethylzinc Reagent in One Pot Catalyzed by a Single Chiral Organometallic Catalyst
作者:Huayin Huang、Hua Zong、Guangling Bian、Ling Song
DOI:10.1021/acs.joc.5b01871
日期:2015.12.18
as the catalyst, the asymmetric β-H transfer reduction of aromatic α-trifluoromethyl ketones and enantioselective addition of aromatic aldehydes with Et2Zn in one pot were successfully realized, affording the corresponding additive products of secondary alcohols in high yields (up to 99%) with excellent enantioselectivities (up to 98% ee) and the reduction products of α-trifluoromethyl alcohols in good