Formation of a reasonably stabilized trichloromethyl anion by the reaction of chloroform with electrogenerated base, and its 1,4-addition to α,β-unsaturated carbonyl compounds
A reasonably stabilized trichloromethylanion (TCMA) was formed by the reaction of chloroform with an electrogenerated base prepared by the electroreduction of 2-pyrrolidone, and the addition of this TCMA to α,β-unsaturated esters gave the corresponding β-trichloromethyl esters in good yields.
Cyclopropane Formation by Copper-Catalysed Indirect Electroreductive Coupling of Activated Olefins and Activated α,α,α-Trichloro or Gem-Dichloro Compounds
作者:S. Sengmany、E. Léonel、J. P. Paugam、J.-Y. Nédélec
DOI:10.1055/s-2002-20969
日期:——
electroreductive coupling ol activatedolefins and activated α,α,α-trichloro or gem-dichloro compounds (Cl 3 CCO 2 Me, PhCCl 3 . Ph 2 CCl 2 , PhCHCl 2 ). This process,using a copper complex in catalytic amountss is convenient for the reagent couple activatedolefin/ activated polyhalide, whatever the reduction potential of each reagent relative to each other. The main advantage of our electrochemical process
Seven MIRC reactions of methyl dichloroacetate with alkenes containing electron-withdrawing groups were used to make 1-chlorocyclopropanecarboxylates. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis and mode of action of 1-substituted trans-cyclopropane 1,2-dicarboxylic acids: inhibitors of the methylaspartase reaction
作者:Kamal Badiani、Philip Lightfoot、David Gani
DOI:10.1039/cc9960000675
日期:——
A range of 1-substituted cyclopropane 1,2-dicarboxylic acids are synthesised using short efficient routes and are found to be good to potent inhibitors of 3-methylaspartase; the crystallographically determined absolute stereochemistry and the mode of action of the most potent inhibitor, (1S,2S)-1-methylcyclopropane 1,2-dicarboxylic acid, is consistent with it acting as a transition state analogue for the central substrate deamination reaction catalysed by the enzyme.