Catalytic CN Bond Alkynylation of<i>N</i>-Benzylic Sulfonamides with Terminal Alkynes
作者:Congrong Liu、Fulai Yang、Tingting Wang
DOI:10.1002/cjoc.201400194
日期:2014.5
of N‐benzylic sulfonamides with terminalalkynes for the synthesis of internal alkynes is reported. In the presence of 5 mol% of (Tf)2NH/Bi(OTf)3 (1:1), a broad range of N‐benzylic sulfonamides react smoothly with arylacetylenes to afford structurally diverse internal alkynes in moderate to excellent yields. We reasoned that vinyl cations could be formed by the regioselective attack of terminal alkynes
Cu(OTf)2-catalyzed arylmethylation of terminal alkynes with benzylic alcohols under ligand-, base-, and additive-free reaction conditions
作者:Kai Ren、Pinhua Li、Lei Wang、Xiuli Zhang
DOI:10.1016/j.tet.2011.02.050
日期:2011.4
An effective, convenient, and mild coupling reaction of benzylic alcohols with terminal alkynes has been developed. As an effective Lewis acid, Cu(OTF)(2)-catalyzed arylmethylation of terminal alkynes with benzylic alcohols generated the corresponding products in BrCH2CH2Br with good yields in the absence of ligand, base, and additive. (C) 2011 Elsevier Ltd. All rights reserved.