SeO<sub>2</sub>-Mediated Oxidative Transposition of Pauson–Khand Products
作者:Sara E. Dibrell、Michael R. Maser、Sarah E. Reisman
DOI:10.1021/jacs.9b13818
日期:2020.4.8
Oxidative transpositions of bicyclic cyclopentenones mediated by selenium dioxide (SeO2) are disclosed. Treatment of Pauson-Khand reaction (PKR) products with SeO2 in the presence or absence of water furnishes di- and trioxidized cyclopentenones, respectively. Mechanistic investigations reveal multiple competing oxidation pathways that depend on substrate identity and water concentration. Functionalization
Ethynyl-cyclohexanol: an efficient acetylene surrogate in Sonogashira coupling
作者:Márton Csékei、Zoltán Novák、András Kotschy
DOI:10.1016/j.tet.2007.10.031
日期:2008.2
The Sonogashira coupling of aryl halides in the presence of 1-ethynyl-cyclohexanol as an acetylene source provides an efficient method for the synthesis of diarylacetylenes without the isolation of the appropriate arylacetylenes. (c) 2007 Elsevier Ltd. All rights reserved.
Zhang, Weiwei; Cheng, Jiang; Huang, Zhengxu, Journal of Chemical Research, 2006, # 12, p. 781 - 782