An efficient method for the synthesis of sulfones via nitrogen loss of sulfonyl hydrazones is described. The reaction was performed in the presence of simple copper salt and base by utilization of sulfonyl hydrazones, which were easily prepared from carbonyl compounds. A wide variety of aryl and alkyl sulfones were obtained in moderate to good yields.
Balfe et al., Journal of the Chemical Society, 1942, p. 605,610
作者:Balfe et al.
DOI:——
日期:——
Direct sulfonylation of Baylis–Hillman alcohols and diarylmethanols with TosMIC in ionic liquid-[Hmim]HSO4: an unexpected reaction
作者:Garima、Vishnu P. Srivastava、Lal Dhar S. Yadav
DOI:10.1016/j.tetlet.2011.06.096
日期:2011.9
A Bronsted acidic ionic liquid-[Hmim]HSO4 promoted unexpected reaction of Baylis-Hillman alcohols and diarylmethanols with p-toluenesulfonylmethyl isocyanide (TosMIC) affording the corresponding sulfone derivatives instead of N-tosylmethyl amides is reported. After isolation of the product, the ionic liquid [Hmim]HSO4 was easily recycled for further use. (C) 2011 Elsevier Ltd. All rights reserved.
Palladium-catalyzed benzylic direct arylation of benzyl sulfones with aryl halides
作者:Takashi Niwa、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1016/j.tet.2009.01.030
日期:2009.3
An effective palladium catalyst system for the direct arylation of benzyl sulfones with aryl halides has been developed. The catalytic reaction provides a facile route to diarylmethyl sulfones. The products can be transformed further via desulfonylative functionalization mediated by aluminum compounds. (C) 2009 Elsevier Ltd. All rights reserved.