Results 31 to 40 of about 12,336 (293)
Sulfones: new reagents in organocatalysis
, 2010 The development of new asymmetric methodologies that afford different structures in an enantioselective fashion is one of the most exciting goals for chemists nowadays. In this subject, lately, the use of sulfones has become a fast growing field.
Alba, A.N.R. +5 more
core +1 more source
The Sulfonation of Safrole with Trimethylsilylchlorosulfonate as Sulfonating Agent
ChemInform, 2004 AbstractFor Abstract see ChemInform Abstract in Full Text.
Philippe Petit +2 more
openaire +1 more source
Synthesis of Chiral, Enantiopure Allylic Amines by the Julia Olefination of α-Amino Esters
Molecules, 2016 The four-step conversion of a series of N-Boc-protected l-amino acid methyl esters into enantiopure N-Boc allylamines by a modified Julia olefination is described. Key steps include the reaction of a lithiated phenylalkylsulfone with amino esters, giving
Fabio Benedetti +5 more
doaj +1 more source
Preparation of Alkyl Alkynyl Sulfones and Cyclic Vinyl Sulfones from Alkynyl(aryl)iodonium Salts
, 2016 The reaction of alkyl sulfinates with alkynyl(aryl)iodonium salts provides a facile access in to otherwise difficult to obtain alkyl alkynyl sulfones and cyclic vinyl sulfones via 1,2-rearrangement or 1,5-CH insertion respectively.
Arantxa Rodríguez (2202688) +5 more
core +1 more source
, 2021 A dioxygen-triggered oxosulfonylation/sulfonylation of unactivated olefins to achieve β-keto sulfones/sulfones has been developed. Interestingly, pluralistic mechanisms were found when different types of compounds were applied as substrates, and ...
Hang Gong (4258147) +4 more
core +1 more source
Isomerisation of β-epoxy sulfones
, 1979 The base-catalyzed isomerisation of β-epoxy sulfones to γ-hydroxy αβ-unsaturated sulfones was shown by kinetic data, isotope effect and stereochemistry to involve an intramolecular synfacial 1-3 hydrogen migration with carbanion-like transition state.
Jana Poláková +2 more
core +1 more source
Reduction of Propargylic Sulfones to (Z)-Allylic Sulfones using Zinc and Ammonium Chloride. [PDF]
, 2007 NoPropargylic sulfones can be cis-hydrogenated using commercial zinc powder and ammonium chloride in THF¿water at room temperature, the major products being the corresponding (Z)-allylic sulfones.
Helen M. Sheldrake +4 more
core +1 more source
Crystal structure of 1,3-diallyl-1,3,3a,4,7,7a-hexahydro-4,7-methano-2-benzothiophene 2,2-dioxide
Acta Crystallographica Section E, 2014 The title compound C15H20O2S, was identified as a product of diallylation of the meso-isomer of the corresponding norbornene sulfone, and it is an achiral compound.
Sambasivarao Kotha, Rama Gunta
doaj +1 more source
Molecules, 2021 Chiral γ-ketothiols, thioacetates, thiobenzoate, disulfides, sulfones, thiosulfonates, and sulfonic acids were obtained from β-pinene for the first time.
Olga M. Lezina +4 more
doaj +1 more source