Highly Chemoselective Catalytic Hydrogenation of Unsaturated Ketones and Aldehydes to Unsaturated Alcohols Using Phosphine-Stabilized Copper(I) Hydride Complexes
作者:Jian-Xin Chen、John F. Daeuble、Donna M. Brestensky、Jeffrey M. Stryker
DOI:10.1016/s0040-4020(99)01098-4
日期:2000.4
phenyldimethylphosphine-stabilized copper(I) hydride complex provides for the highly chemoselective hydrogenation of unsaturated ketones and aldehydes to unsaturated alcohols, including the regioselective 1,2-reduction of α,β-unsaturated ketones and aldehydes to allylic alcohols. The active catalyst can be derived in situ by phosphine exchange using commercial [(Ph3P)CuH]6 or from the reaction of copper(I) chloride
Cerium-free Luche reduction directed by rehydrated alumina
作者:Ebenezer Jones-Mensah、Leslie A. Nickerson、Jackson L. Deobald、Hailey J. Knox、Alyssa B. Ertel、Jakob Magolan
DOI:10.1016/j.tet.2016.03.017
日期:2016.6
A 1,2-regioselective reduction of α,β-unsaturatedketones to their corresponding allylicalcohols is accomplished with NaBH4 in the presence of acidic activated alumina rehydrated to the Brockmann II grade by adding 3 % w/w water. The substrate scope includes eight ketones reduced in high regio- and diastereoselectivity to their corresponding allylicalcohols. This is the first example of the strategy
Hydride-mediated homogeneous catalysis. Catalytic reduction of .alpha.,.beta.-unsaturated ketones using [(Ph3P)CuH]6 and H2
作者:Wayne S. Mahoney、Jeffrey M. Stryker
DOI:10.1021/ja00206a008
日期:1989.11
Hydride-mediated reduction of alpha},beta}-unsaturated ketones catalytic in the hydride reagent is reported using ((Phsub 3}P)CuH)sub 6} and molecular hydrogen. The reaction proceeds at room temperature and is highly regioselective, affording either the product of conjugate reduction or complete 1,4- and 1,2-reduction to the saturated alcohol, depending on reaction conditions. In the presence of
New Pyridinone Derivatives as Potent HIV-1 Nonnucleoside Reverse Transcriptase Inhibitors
作者:Kiet Le Van、Christine Cauvin、Stéphane de Walque、Benoît Georges、Sandro Boland、Valérie Martinelli、Dominique Demonté、François Durant、László Hevesi、Carine Van Lint
DOI:10.1021/jm801438e
日期:2009.6.25
Several 5-ethyl-6-methyl-4-cycloalkyloxy-pyridin-2(1H)-ones were synthesized and evaluated for their anti HIV-1 activities against wild-type virus and clinically relevant mutant strains. A racemic mixture (10) with methyl substituents at positions 3 and 5 of the cyclohexyloxy moiety had potent antiviral activity against wild-type HIV-1. Subsequent stereoselective synthesis of a stereoisomer displaying