Visible-Light-Driven Silver-Catalyzed One-Pot Approach: A Selective Synthesis of Diaryl Sulfoxides and Diaryl Sulfones
作者:Dong Hyuk Kim、Juyoung Lee、Anna Lee
DOI:10.1021/acs.orglett.7b03901
日期:2018.2.2
An efficient one-pot approach for the synthesis of diaryl sulfoxides and diaryl sulfonesusing aryl thiols and aryl diazonium salts was developed. The use of a visible-light-driven silver catalysis and the subsequent singlet-oxygen-induced oxidation enabled selective synthesis of sulfoxides and sulfones in the absence of a photocatalyst. The reactions were carried out under mild reaction conditions;
Triflic‐Acid‐Catalyzed Friedel‐Crafts Reaction for the Synthesis of Diaryl Sulfones
作者:Alban Falconnet、Jan‐Dirk Arndt、A. Stephen K. Hashmi、Thomas Schaub
DOI:10.1002/ejoc.202200477
日期:2022.7.14
The synthesis of diaryl sulfones derivatives through Friedel-Crafts sulfonylation was achieved by using trifluoromethanesulfonic acid as catalyst with arylsulfonyl chlorides and arenes at elevated temperatures. In this procedure, the catalyst and the surplus of arene may well be retrieved and recycled in further batches.
Isomerization-Free Sulfonylation and Its Application in the Synthesis of PHA-565272A
作者:Thomas J. Fleck、Jiong Jack Chen、Cuong V. Lu、Kari J. Hanson
DOI:10.1021/op050208a
日期:2006.3.1
FeCl3 catalyzed an isomerization-free Friedel-Crafts sulfonylation between 1-naphthalenesulfonyl chloride and halobenzenes. The coupled halide was then displaced using 35% hydrazine in DMSO to provide the Fischer indole precursor. Pure 5-chloro-2-pentanone was the key for a successful Grandberg modification of Fischer indole synthesis that effectively constructed both the indole core and side chain of the target molecule. The development of these methods enabled a rapid preparation of kilogram quantities of PHA-565272A.
Yoshii, Yoshihiro; Ito, Akiyoshi; Hirashima, Tsuneaki, Journal of the Chemical Society. Perkin transactions II, 1988, p. 777 - 782