37909-84-5Relevant academic research and scientific papers
Radical Cyclization of Arenesulfonyl Chlorides and Alkynes: A Rapid Access to π-Conjugated Benzothiophenes
Wan, Danyang,Yang, Yudong,Liu, Xingyan,Li, Mingliang,Zhao, Siling,You, Jingsong
supporting information, p. 55 - 59 (2016/01/20)
A metal-free radical cyclization of arenesulfonyl chlorides with alkynes has been developed, which provides a rapid and practical access to a variety of π-conjugated benzothiophenes with a broad reactive functional group tolerance. Furthermore, dialkynyl compounds could also undergo this transformation to give extended π-systems in good yields.
SYNTHESIS AND REARRANGEMENT OF DIARYL-HYDROXY-BENZOTHIOPHENS. A NEW SYNTHESIS OF 2,3-DIARYL-BENZOTHIOPHENS
Leardini, Rino,Tundo, Antonio,Zanardi, Giuseppe,Pedulli, Gianfranco
, p. 3381 - 3382 (2007/10/02)
The synthesis of some 2-hydroxy-2(H)-3,3-diaryl- and 3-hydroxy-3(H)-2,2-diaryl-benzothiophens (4) and (7) respectively is described; by acidic treatment these compounds readily rearrange to 2,3-diaryl-benzothiophens (5) in almost quantitative yields
Synthesis and Reactions of Sulfenic Trifluoromethanesulfonic Anhydrides
Effenberger, Franz,Russ, Werner
, p. 3719 - 3736 (2007/10/02)
Sulfenyl halogenides 1 and 4 react with silver trifluoromethanesulfonate (2) to give aryl 3 and alkylsulfenic trifluoromethanesulfonic anhydrides 5, resp., in good yields; 3 and 5 could not be isolated because of their instability. 1H NMR spectroscopic data of 5a, b, each in dichloromethane and nitromethane, resp., are indicative of a dissoziation to adducts of alkylsulfenylium ions and the solvent.Whereas 3 do not react with aromatic compounds, addition products with diphenylacetylene, arylsulfenylvinyl trifluoromethanesulfonates 11, are formed smoothly, which under the reaction conditions immediately cyclize to give benzothiophenes 10 in excellent yields.
