Direct sulfonylation of Baylis–Hillman alcohols and diarylmethanols with TosMIC in ionic liquid-[Hmim]HSO4: an unexpected reaction
摘要:
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.