Reductive Coupling of Geminal Dichlorides by Iron(II) Oxalate Dihydrate
作者:Jitender M. Khurana、Golak C. Maikap、Sanjay Mehta
DOI:10.1055/s-1990-26998
日期:——
A facile procedure for the quantitative conversion of geminal dichlorides to E olefins with iron(II) oxalate dihydrate in refluxing anhydrous dimethylformamide under a nitrogen atmosphere is described. The coupling proceeds via the corresponding vicinal dichlorides.
Abstract Benzal chlorides and benzal bromides were conveniently synthesized by reaction of aryl aldehydes with a Vilsmeier type reagent formed in situ by reduction of CC14 or CBr4 in dimethylformamide (DMF) as solvent.
Synthesis of α,α-dichloroalcohols, α-hydroxyketones and 1-chloro-1-arylalkylene oxides via protonation of acyllithium reagents
作者:George W Kabalka、Nan-Sheng Li、Su Yu
DOI:10.1016/s0022-328x(98)00797-9
日期:1999.1
The protonation of acyllithiumreagents generated in situ from alkyllithiums and carbon monoxide in the presence of dichloromethane or dichloroarylmethanes produces α,α-dichloroalcohols in high yields. The reaction produces α-hydroxy-ketones in high yields when the aryl group of dichloroarylmethane contains a strong electron-donating group at the ortho or para position. The transformation of α,α-dichloro-α-aryl
[EN] SULFONYL PIPERIDINE DERIVATIVES AND THEIR USE FOR TREATING PROKINETICIN MEDIATED DISEASES<br/>[FR] DÉRIVÉS DE SULFONYLPIPÉRIDINE ET LEUR UTILISATION POUR LE TRAITEMENT DE MALADIES MÉDIÉES PAR UNE PROKINÉTICINE
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2013179024A1
公开(公告)日:2013-12-05
The present invention provides compounds of formula (I) and pharmaceutically acceptable salts thereof : (I) in which m, n, W, X, Y, Z, R1, R2, R3 and R4 are as defined in the specification, for use in the treatment or prevention of a diseases o conition mediated by a prokineticin, such as psychiatric and neurological conitions.
Epoxide Formation by Indirect Electroreductive Coupling between Aldehydes or Ketones and Activated<i>gem</i>-Dichloro Compounds
作者:J. P. Paugam、S. Oudeyer、E. Léonel、J.-Y. Nédélec
DOI:10.1055/s-2004-815915
日期:——
Epoxides are prepared by indirect electroreductive coupling of carbonyl compounds (aldehydes or ketones) and activated gem-dichloro compounds. This process is more efficient with aryl ketones than with aryl aldehydes. Though yields are only moderate, this method offers the valuable advantage of avoiding the use of strong bases or peroxides.