28937-60-2Relevant academic research and scientific papers
Kinetics and mechanism of oxirane formation by darzens condensation of ketones: Quantification of the electrophilicities of ketones
Li, Zhen,Jangra, Harish,Chen, Quan,Mayer, Peter,Ofial, Armin R.,Zipse, Hendrik,Mayr, Herbert
supporting information, p. 5500 - 5515 (2018/05/03)
The kinetics of epoxide formation by Darzens condensation of aliphatic ketones 1 with arylsulfonyl-substituted chloromethyl anions 2 (ArSO2CHCl-) have been determined photometrically in DMSO solution at 20 °C. The reactions proceed v
Preparation of 2-Halogeno S-Phenyl Thioesters from 2-Phenylsulphonyl-2-phenylthiooxiranes. Crystal Structures of 2-Phenylsulphonyloxiranes
Hewkin, Cheryl T.,Jackson, Richard F. W.,Clegg, William
, p. 3091 - 3102 (2007/10/02)
1-Phenylsulphonyl-1-phenylthioalkenes 8 are prepared with high stereoselectivity as (E) isomers in a one-pot process by reaction of phenyl phenylthiomethyl sulphone 9 with aldehydes, followed by elimination.Nucleophilic epoxidation of these alkenes with l
PREPARATION AND RING-OPENING REACTIONS OF 2-PHENYLSULPHONYL-2-TRIMETHYLSILYL OXIRANES
Hewkin, Cheryl T.,Jackson, Richard F. W.
, p. 1877 - 1880 (2007/10/02)
Reaction of 2-phenylsulphonyl oxiranes (1) with butyllithium in the presence of chlorotrimethylsilane gave 2-phenylsulphonyl-2-trimethylsilyl oxiranes (2), which on treatment with MgBr2*Et2O gave 2-bromoacylsilanes (3) and either bromovinyl sulphones (5)
Preparation stereoselective de methyle cetones α-bromees: stereochimie de l'addition d'anions en α d'un groupe sulfone sur des cyclohexanones monocycliques et steroidiques
Begue, Jean-Pierre,Bonnet-Delpon, Daniele,Charpentier-Morize, Micheline,Sansoulet, Jean
, p. 2087 - 2092 (2007/10/02)
This work describes stereochemical results obtained for the preparation of α-bromomethyl ketones or α-bromoaldehydes starting from monocyclic and steroid cyclohexanones, using the Durst method.In all the cases studied here, the bromine is introduced selectively in the equatorial position.However, for monocyclic compounds, the yields of α-bromocarbonyl compounds are limited by the competitive formation of α-ethylenic carbonyl compounds.
