Silanes in organic synthesis. 8. Preparation of vinylsilanes from ketones and their regiospecific cyclopentenone annulation
作者:Leo A. Paquette、William E. Fristad、David S. Dime、Thomas R. Bailey
DOI:10.1021/jo01303a020
日期:1980.7
Silanes in organic synthesis
作者:William E. Fristad、Yeun-Kwei Han、Leo A. Paquette
DOI:10.1016/s0022-328x(00)96159-x
日期:1979.7
One-Pot Synthesis of <i>N</i>-Alkyl Sulfonyl Hydrazones by Dialkyl Acetylenedicarboxylate-Mediated Reaction of Trialkylphosphites with Sulfonyl Hydrazones
作者:Seyed Abolghasem Hashemi
DOI:10.1080/00397911.2013.786088
日期:2013.12.17
Stable derivatives of N-alkyl sulfonyl hydrazone were obtained in excellent yields from the reaction between electron-deficient acetylenic ester compounds and sulfonyl hydrazones in the presence of trialkylphosphites in dichloromethan at room temperature. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]
PhI(OAc) 2 -mediated decomposition of N -arylsulfonyl hydrazones: metal-free synthesis of ( E )-vinyl sulfones
作者:Zaigang Luo、Yuyu Fang、Yu Zhao、Xuemei Xu、Chengtao Feng、Zhong Li、Xiaomei Zhang、Jie He
DOI:10.1016/j.tetlet.2016.07.099
日期:2016.9
preparing of (E)-vinylsulfones via PhI(OAc)2-mediated decomposition of ketone-derived N-arylsulfonyl hydrazones has been developed. The generation of α- or β-substituted vinylsulfones was affected by the steric hindrance at β-position of the substrates. This transformation provides an environment-friendly and important complementary strategy for the synthesis of various (E)-vinylsulfones.