24197-29-3Relevant academic research and scientific papers
Facile synthesis of diarylsulfones from arenes and 3CdSO4·xH2O via mechanochemistry
Qin, Shuai,Zhang, Pu,Qin, Yu-Jun,Guo, Zhi-Xin
supporting information, (2020/01/06)
A variety of substituted diarylsulfones could be synthesized by simple arenes and 3CdSO4·xH2O in the presence of P2O5 under high-speed ball milling. It was suggest the aromatic sulfonation was performed by arene and in situ generated H2SO4, following-up by electrophilic substitution with another arene to give diarylsulfone.
The synthesis of diarylsulfones with simple arenes and K2S2O8 through double C-S bond formation
Yang, Yiqing,Chen, Zhang,Rao, Yu
supporting information, p. 15037 - 15040 (2014/12/11)
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.
An efficient method for aromatic Friedel-Crafts alkylation, acylation, benzoylation, and sulfonylation reactions
Singh, Ravi P,Kamble, Rajesh M,Chandra, Kusum L,Saravanan,Singh, Vinod K
, p. 241 - 247 (2007/10/03)
Aromatic electrophilic substitution reactions such as alkylation, acylation, benzoylation, and sulfonylation were studied in the presence of a catalytic amount of Cu(OTf)2 and Sn(OTf)2. Cu(OTf)2 was very efficient for alkylation, acylation, and benzoylation reactions. However, in case of sulfonylation reactions, Sn(OTf)2 gave better results.
Acylation and related reactions under microwaves. 4. Sulfonylation reactions of aromatics
Marquie,Laporterie,Dubac,Roques,Desmurs
, p. 421 - 425 (2007/10/03)
Solvent-free sulfonylation of benzene and its activated or deactivated derivatives were carried out under microwave (MW) irradiation and a catalytic amount of iron(III) chloride, which, under these conditions, is more, active than other metallic salts. With more reactive and/or nonvolatile reagents (anisole, xylenes, mesitylene) expeditious conditions (short reaction time at constant MW power without control of the temperature) were used. With less reactive and/or low-boiling reagents (benzene, toluene, halobenzenes), the rise in temperature and the increase of reaction time were controlled either by sequential MW irradiation or by a temperature order. It was shown that MWs cause preferential interactions with polar species present in the reaction, especially the aryl sulfone and its FeCl3-complexed form. A MW nonthermal effect was not observed when identical temperature gradients were produced by classical heating and MW irradiation, and if reaction temperature was strictly controlled.
Novel Sulfonylation reagent: Sulfuric Acid-Hexafluoroacetic Anhydride
Tyobeka, Themba E.,Hancock, Richard A.,Weigel, Helmut
, p. 114 - 115 (2007/10/02)
A mixture of sulfuric acid and hexafluoroacetic anhydride is an efficient reagent for the sulfonylation of aromatic compounds.
Rearrangements and decompositions of thiobisphenols
Neale,Bain,Rawlings
, p. 4583 - 4591 (2007/10/05)
2,2′-, 2,4′- and 4,4′-Monothiobisphenol separately rearrange in phenol at 180° in the presence of sodium hydroxide to give similar mixtures containing only 2,2′-, 2,4′- and 4,4′-monothiobisphenol in the approximate ratio, 45:45:10. The rearrangements appear to be intermolecular and they are interpreted in terms of polar processes which lead initially to the formation of o- and p-monothiobenzoquinones. 2,2′-Dithiobisphenol, 4,4′-dithiobisphenol and 4,4′-trithiobisphenol under similar conditions are desulphurated with the evolution of hydrogen sulphide also to give mixtures containing only 2,2 - 2,4′- and 4,4′-monothiobisphenol whilst 3,3′-dithiobisphenol is stable in alkaline phenol even after long periods at 180°. Similar initial heterolyses to o- and p-monothiobenzoquinones are suggested as sources of the monothiobisphenols and displacements of sulphide- or hydrosulphide-ions from intermediate benzeneperthiolate ions by carbanions derived from phenol are suggested as sources of the hydrogen sulphide.
