Efficient Asymmetric Oxidation of Sulfides and Kinetic Resolution of Sulfoxides Catalyzed by a Vanadium−Salan System
作者:Jiangtao Sun、Chengjian Zhu、Zhenya Dai、Minghua Yang、Yi Pan、Hongwen Hu
DOI:10.1021/jo040221d
日期:2004.11.1
The asymmetricoxidation of sulfides to chiral sulfoxides with hydrogen peroxide in good yield and high enantioselectivity has been catalyzed very effectively by chiral vanadium−salan [N,N‘-alkyl bis(salicylamine)] complex. The salan ligand shows results superior in terms of reactivity and enantioselectivity to those of salen [N,N‘-alkylene bis(salicylideneimine)] analogue, and provides the sulfoxide
NOVEL ANTIBACTERIAL AGENTS FOR THE TREATMENT OF GRAM POSITIVE INFECTIONS
申请人:MetCalf, III Chester A.
公开号:US20100184649A1
公开(公告)日:2010-07-22
The present invention relates to novel lipopeptide compounds, pharmaceutical compositions of these compounds and methods of using these compounds as antibacterial compounds. The compounds of the invention are particularly useful against a variety of bacteria, including resistant strains. The compounds are useful as antibacterial agents against
Clostridium difficile.
Carbon–sulphur bond cleavage in the reaction of benzyl and t-butyl sulphoxides with N-halogenosuccinimides
作者:F. Jung、T. Durst
DOI:10.1039/c39730000004
日期:——
Benzyl and t-butyl alkyl or aryl sulphoxides react with NBS or NCS in CHCI3–ethanol (1%) at 25° to give benzyl or t-butyl halides and ethyl esters of alkyl or aryl sulphinic acids.
Carbon-Sulfur Bond Cleavage in the Reaction of Alkyllithiums with Sulfoxides
作者:T. Durst、M. J. LeBelle、Rita Van den Elzen、K.-C. Tin
DOI:10.1139/v74-119
日期:1974.3.1
When sulfoxides are reacted with alkyllithiums two competing reactions can occur: (i) abstraction of an α-hydrogen to give an α-lithiosulfoxide and (ii) carbon–sulfurbondcleavage according to R1S...
Stereoselective conjugate additions of sulphoxide stabilised carbanions to α,β-unsaturated esters
作者:M. Casey、A.C. Manage、L. Nezhat
DOI:10.1016/s0040-4039(00)82202-9
日期:1988.1
The reaction of lithiated alkyl t-butyl sulphoxides with α,β-unsaturated esters gives conjugateaddition products in good yield, with high stereoselectivity.