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.
An Unexpected Reaction of Arenesulfonyl Cyanides with Allylic Alcohols: Preparation of Trisubstituted Allyl Sulfones
An efficient and practical protocol for the highly selective preparation of substituted allyl sulfones has been developed. Arenesulfonyl cyanides, Baylis–Hillman adducts, and simple allylic alcohols give an unforeseen outcome (see scheme).