Alkylation of Allyl/Alkenyl Sulfones by Deoxygenation of Alkoxyl Radicals
作者:Jia-Bin Han、Ao Guo、Xiang-Ying Tang
DOI:10.1002/chem.201806138
日期:2019.2.26
challenging deoxygenation of alkoxyl radicals from readily accessible alcohol derivatives was developed, affording facile synthesis of functionalized alkenes with good functional group tolerance under mild reaction conditions. Because alkoxyl radicals can easily undergo β‐fragmentations or hydrogen abstractions, this new strategy for deoxygenation of alkoxyl radicals is highly valuable. Moreover, mechanistic
Chromatography-free product separation in the Mitsunobu reaction
作者:Anthony J. Proctor、Kevin Beautement、John M. Clough、David W. Knight、Yingfa Li
DOI:10.1016/j.tetlet.2006.05.070
日期:2006.7
Mitsunobu products can be isolated pure without column chromatography by first washing a solution of the crude reaction mixture in dichloromethane with 15% aqueous hydrogen peroxide followed by aqueous sodium sulfite. A final filtration through silica gel secures the pure Mitsunobu product. (c) 2006 Elsevier Ltd. All rights reserved.