General synthesis of chiral 2-p-tolylsulfinylquinones.
摘要:
Optically pure (S)-p-tolylsulfinyl substituted quinones were synthesized by deketalization of the corresponding quinone bisketals obtained by Andersen's type synthesis starting from 2-bromo-1,4-dimethoxy aromatic derivatives, followed by anodic oxidation of the resulting sulfoxide.
Highly selective catalytic Friedel–Crafts acylation and sulfonylation of activated aromatic compounds using indium metal
作者:Doo Ok Jang、Kyung Soo Moon、Dae Hyan Cho、Joong-Gon Kim
DOI:10.1016/j.tetlet.2006.06.099
日期:2006.8
Friedel–Crafts acylation of activated benzenes with various aromatic and aliphatic acid chlorides was studied in the presence of indium metal. The reaction was accomplished in high isolated yields under solvent or solvent-less conditions. The method is also applicable for preparing diaryl sulfones from aromatic compounds and aryl sulfonylchlorides.
The synthesis of diarylsulfones with simple arenes and K<sub>2</sub>S<sub>2</sub>O<sub>8</sub>through double C–S bond formation
作者:Yiqing Yang、Zhang Chen、Yu Rao
DOI:10.1039/c4cc05964f
日期:——
An unprecedented double C-S bond formation method has been developed to prepare both symmetric and unsymmetric diarylsulfones with simple arenes in a single step. This represents the first example that K2S2O8 can be employed as a highly effective sulfonating agent to synthesize diarylsulfones. The reaction demonstrates excellent reactivity, good functional group tolerance and high yields.
MoO2Cl2 as a novel catalyst for Friedel–Crafts acylation and sulfonylation
作者:Rita G. de Noronha、Ana C. Fernandes、Carlos C. Romão
DOI:10.1016/j.tetlet.2009.01.039
日期:2009.4
The use of MoO2Cl2 as a novel catalyst for Friedel–Craftsacylation and sulfonylation is described. A series of aromatic ketones and sulfones were prepared in moderate to good yields using acyl chloride or sulfonyl chloride in the presence of MoO2Cl2 (20 mol %), under solvent-free conditions.
Chloroaluminate Ionic Liquid Immobilized on Magnetic Nanoparticles as a Heterogeneous Lewis Acidic Catalyst for the Friedel–Crafts Sulfonylation of Aromatic Compounds
Chloroaluminate ionic liquid bound on magnetic nanoparticles (Fe3O4@O2Si[PrMIM]Cl·AlCl3) was prepared and used as a heterogenous Lewis acidiccatalyst for the Friedel–Crafts sulfonylation of aromatic compounds with sulfonyl chlorides or p-toluenesulfonic anhydride. The catalyst’s stability, efficiency, easy recovery, and high recyclability without considerable loss of catalytic capability after four recycles
Manganese(III) Acetate Mediated C-H Sulfonylation of 1,4-Dimethoxybenzenes with Sodium and Lithium Sulfinates
作者:Shuai Liang、Yueling Ren、Georg Manolikakes
DOI:10.1002/ejoc.201700713
日期:2017.8.2
A simple and mild Mn(OAc)3-promoted oxidative coupling of 1,4-dimethoxybenzenes with sodium and lithiumsulfinates was developed. The reaction proceeded readily at room temperature in air, and various sulfones were synthesized in moderate to high yields. In addition, a straightforward approach for the conversion of organolithium reagents and sulfur dioxide into sulfonylated 1,4-dimethoxybenzenes was