A highly selective, environmentally friendly, and scalable electrochemical protocol for the construction of α-acyloxy sulfides, through the synergistic effect of self-assembly-induced C(sp3)–H/O–H cross-coupling, is reported. It features exceptionally broad substrate scope, high regioselectivity, gram-scale synthesis, construction of complex molecules, and applicability to a variety of nucleophiles
Oxidation of thioethers and sulfoxides with hydrogen peroxide using TS-1 as catalyst
作者:Denis J. Robinson、Lucinda Davies、Neil McGuire、Darren F. Lee、Paul McMorn、311J. Willock、Graeme W. Watson、Philip C. Bulman Page、Donald Bethell、311J. Hutchings
DOI:10.1039/a907605k
日期:——
used to investigate the origin of this effect. For all substrates used in this study, the oxidation of the thioether to the sulfoxide was found to occur readily by a non-catalysed solution reaction and this was studied in detail. However, the oxidation of the sulfoxide to the sulfone was only observed in the catalysed reactions. It was observed that the non-catalysed reaction can be suppressed by carrying
An efficient asymmetric oxidation of sulfides to sulfoxides
作者:P. Pitchen、E. Dunach、M. N. Deshmukh、H. B. Kagan
DOI:10.1021/ja00338a030
日期:1984.12
Mise au point d'un nouveau reactif: Ti(O-i-C 3 H 7 ) 4 /tartrate de diethyle/eau/t-C 4 H 9 OOH dans les proportions (1:2:1:1). Ce reactif oxyde les sulfures fonctionnalises prochiraux en sulfoxydes optiquement actifs
Mise au point d'un nouveau 反应:Ti(OiC 3 H 7 ) 4 /二乙基酒石酸盐/eau/tC 4 H 9 OOH dans les 比例(1:2:1:1)。氧化硫反应功能
A Facile and Selective Procedure for Oxidation of Sulfides to Sulfoxides on Silica Gel Supported Magnesium Monoperoxyphthalate (MMPP) in Dichloromethane
作者:Mohammed Hashmat Ali、William C. Stevens
DOI:10.1055/s-1997-1420
日期:1997.7
The scope of the magnesium monoperoxyphthalate (MMPP) oxidation of sulfides to sulfoxides has been extended by using hydrated silica gel as a solid support in dichloromethane media. This procedure works in the presence of a number of functional groups on the sulfides, including carbonyl and alkene groups that have been known to undergo Baeyer-Villiger oxidation and epoxidation with MMPP when using more conventional procedures. To our knowledge, this is the first example of oxidation of sulfides containing a carbonyl group with MMPP in non-aqueous media without any Baeyer-Villiger reaction. The reported procedure is easy to perform, product separation is trivial and it produces excellent yields.
Acid-catalyzed reduction of various cyclic sulfoxides with iodide ion were kinetically investigated. The rates of reduction of thianthrene, phenoxathiin, dibenzothiophene oxides were found to be in a linear relation with their basicities, while those of alicyclic sulfoxides fall in the following sequence with a 700 fold range; 5->4->open>7->6- membered cyclic sulfoxides. This rate sequence seems to