Efficient synthesis of aliphatic sulfones by Mg mediated coupling reactions of sulfonyl chlorides and aliphatic halides
作者:Ying Fu、Qin-Shan Xu、Quan-Zhou Li、Zhengyin Du、Ke-Hu Wang、Danfeng Huang、Yulai Hu
DOI:10.1039/c7ob00251c
日期:——
Sulfonylchlorides were reduced to anhydrous sulfinate salts with magnesium under sonication. These sulfinates were alkylated to sulfones with alkyl chlorides in the presence of catalytic sodium iodide under sonication. A variety of aliphatic sulfones was efficiently prepared by this one-pot two-step procedure.
General sulfone construction <i>via</i> sulfur dioxide surrogate control
作者:Shihao Chen、Yaping Li、Ming Wang、Xuefeng Jiang
DOI:10.1039/c9gc03841h
日期:——
sulfones with a facile combination of halides, sulfurdioxide surrogates and phosphate esters is described. When thiourea dioxide was employed as a reductive sulfurdioxide surrogate, alkyl–alkyl sulfones were obtained under transitionmetal free conditions. Aryl–alkyl sulfones were obtained with an extremely low catalytic loading (0.2 mol%) via altering the mask of sulfurdioxide surrogates to sodium
A mild and efficient new synthesis of aryl sulfones from boronic acids and sulfinic acid salts
作者:Christian Beaulieu、Daniel Guay、Zhaoyin Wang、David A. Evans
DOI:10.1016/j.tetlet.2004.02.127
日期:2004.4
A new efficient and mild preparation of sulfones from boronic acids and sulfinicacid salts is reported. The cross-coupling reaction mediated by cupric acetate gives access to a variety of sulfones in excellent yield.
One-Step Synthesis of Thieno[3,2-<i>b</i>]thiophene 1,1-Dioxide Derivatives
作者:Claudia Fattuoni、Michele Usai、M. Cabiddu、Enzo Cadoni、Stefania De Montis、Salvatore Cabiddu
DOI:10.1055/s-2007-983716
日期:2007.6
A rapid, one-step synthesis of thieno[3,2- B]thiophene 1,1-dioxide derivatives using direct bimetalation of 3-(methylsulfonyl)thiophene and ring closure with esters is described. Two iterative, one-pot monometalations of the same substrate allowed bifunctionalization with either equal or different groups, after electrophilic quenching.
Aryl Methyl Sulfone Construction from Eco‐Friendly Inorganic Sulfur Dioxide and Methyl Reagents
作者:Ming Wang、Jiaoyan Zhao、Xuefeng Jiang
DOI:10.1002/cssc.201802919
日期:2019.7.5
for the construction of significant functional methylsulfones, in which introduction of sulfur dioxide at the last stage was successfully achieved in one step. Inorganic sodium metabisulfite was used as an eco‐friendly sulfur dioxide source. Green dimethyl carbonate was employed as methyl reagent in this transformation. Diverse functional methylsulfones were obtained from various readily available