作者:Steven M. Allin、William R.S. Barton、W. Russell Bowman、Emma Bridge (née Mann)、Mark R.J. Elsegood、Tom McInally、Vickie McKee
DOI:10.1016/j.tet.2008.06.014
日期:2008.8
Alkyl radicals have been cyclised onto pyrroles, imidazoles and pyrazoles, and acyl radicals cyclised onto pyrroles, using Bu3SnH-, (TMS)3SiH- and Bu3GeH-mediated aromatic homolytic substitution for the synthesis of bicyclic N-heterocycles. The reactions yield intermediate π-radicals that lose hydrogen in the rearomatisation step of the aromatic homolytic substitution. Mechanistic studies of these
A light-mediated C−Se bond coupling reaction of arylhalides with diselenides under mild photocatalyst-free conditions for preparing aryl selenoethers has been achieved. The transformation is charactered by readily available materials, mild conditions, broad substrate scope and high efficiency. A reasonable mechanism has been proposed based on the preliminary mechanistic investigation. The protocol
An electrochemical method for deborylative selenylation of arylboronic acids under metal- and oxidant-free conditions
作者:Zhengjiang Fu、Jian Yin、Dongdong He、Xuezheng Yi、Shengmei Guo、Hu Cai
DOI:10.1039/d1gc02962b
日期:——
An efficient protocol to synthesize aryl selenoethers through deborylative selenylation of widely available arylboronicacids has been established underelectrochemicalconditions in the absence of metal catalyst and external oxidant. The synthesis of bioactive molecules and gram-scale transformation have been performed to highlight the synthetic utility of the protocol. CV (cyclic voltammetry) experiment
Electrochemical Mn-Promoted Radical Selenylation of Boronic Acids with Diselenide Reagents
作者:Ziyue Chen、Yuan Wang、Chenjian Hu、Daoxin Wang、Peilin Lei、Hong Yi、Yong Yuan、Aiwen Lei
DOI:10.1021/acs.orglett.2c00607
日期:2022.5.13
A powerful and environmentally friendly electrochemical manganese-promoted free radical selenylation reactionbetween boronic acids and diselenide reagents was established. This electrochemical protocol provides a practically applicable way to a series of valuable organoseleniumcompounds with the use of easy available materials. Mechanistic experiments implied that the seleno-radical formed via direct