A SELECTIVE AND CONVENIENT OXIDATION OF ACETYLENIC SULFIDES TO ACETYLENIC SULFOXIDES USING TRICHLOROISOCYANURIC ACID
摘要:
Acetylenic sulfides are readily oxidized to acetylenic sulfoxides by a solution of pyridine, water, benzoic acid and trichloroisocyanuric acid in acetonitrile and methylene chloride.
An Enantioselective Approach to the Preparation of Chiral Sulfones by Ir-Catalyzed Asymmetric Hydrogenation
作者:Byron K. Peters、Taigang Zhou、Janjira Rujirawanich、Alban Cadu、Thishana Singh、Wangchuk Rabten、Sutthichat Kerdphon、Pher G. Andersson
DOI:10.1021/ja5079877
日期:2014.11.26
sulfonyl compounds were prepared using the iridium catalyzed asymmetric hydrogenation reaction. Vinylic, allylic and homoallylic sulfone substitutions were investigated, and high enantioselectivity is maintained regardless of the location of the olefin with respect to the sulfone. Impressive stereoselectivity was obtained for dialkyl substitutions, which typically are challenging substrates in the hydrogenation
使用铱催化的不对称氢化反应制备了几种手性磺酰基化合物。研究了乙烯基、烯丙基和高烯丙基砜的取代,无论烯烃相对于砜的位置如何,都保持了高对映选择性。二烷基取代获得了令人印象深刻的立体选择性,这通常是氢化中具有挑战性的底物。正如预期的那样,体积更大的 Z 底物比相应的 E 异构体氢化得更慢,并且对映选择性略低。
Sulfoxide synthesis from sulfinate esters under Pummerer-like conditions
作者:Akihiro Kobayashi、Tsubasa Matsuzawa、Takamitsu Hosoya、Suguru Yoshida
DOI:10.1039/d0cc02253e
日期:——
A facile synthetic method for the preparation of allyl sulfoxides by S-allylation of sulfinate esters proceeds through sulfonium intermediates without [3,3]-sigmatropic rearrangement and further Pummerer-type reactions of the resulting allyl sulfoxides. On the basis of the plausible reaction mechanism involving sulfonium salt intermediates, S-alkynylation and S-arylation were also accomplished.
<i>tert</i>-Butyl Sulfoxide as a Starting Point for the Synthesis of Sulfinyl Containing Compounds
作者:Juhong Wei、Zhihua Sun
DOI:10.1021/acs.orglett.5b02743
日期:2015.11.6
Sulfoxides bearing a tert-butyl group can be activated using N-bromosuccinimide (NBS) under acidic conditions and then subsequently treated with a variety of nitrogen, carbon, or oxygen nucleophiles to afford a wide range of the corresponding sulfinic acid amides, new sulfoxides, and sulfinic acid esters.
Hydrotelluration and carbotelluration of acetylenic sulfoxides: regio- and stereoselective preparation of α- and β-organotellurovinyl sulfoxides
作者:Qing Xu、Xian Huang、Jun Ni
DOI:10.1016/j.tetlet.2004.02.064
日期:2004.3
(Z)-beta-Organotellurovinyl sulfoxides were synthesized via a highly regio- and stereoselective anti-hydrotelluration of acetylenic sulfoxides. alpha-Organotellurovinyl sulfoxides were obtained from a three component syn-carbotelluration reaction of acetylenic sulfoxides, that is, syn-addition of monoorganocopper reagents to acetylenic sulfoxides followed by the electrophilic reaction of the vinyl copper intermediates with benzenetellurenyl iodide at low temperature. Synthetic applications of the organotellurovinyl sulfoxides have been investigated. (C) 2004 Elsevier Ltd. All rights reserved.
Tandem Cross-Coupling of Alkynyl Sulfides and Alkynyl Sulfoxides/[3,3]-Sulfonium Rearrangement to Construct Tetrasubstituted Furans
作者:Shuyu Meng、Yinglan Wang、Jie Liu、Jie Zheng、Xiao Qian、Quanrui Wang