PROCESS FOR PREPARING 2,2'-SELENOBIARYL ETHERS OR 4,4'-SELENOBIARYL ETHERS USING SELENIUM DIOXIDE
申请人:Dyballa Katrin Marie
公开号:US20150336885A1
公开(公告)日:2015-11-26
A process for preparing a 2,2′-selenobiaryl ether or a 4,4′-selenobiaryl ether, proceeds by a) adding a first phenol to the reaction mixture, b) adding a second phenol to the reaction mixture, c) adding selenium dioxide to the reaction mixture, d) adding a base having a pKb in the range from 8 to 11 to the reaction mixture, and e) adjusting the reaction temperature of the reaction mixture such that the first phenol and the second phenol are converted to said 2,2′-selenobiaryl ether or said 4,4′-selenobiaryl ether.
HETEROCYCLIC SELENABISPHOSPHITES AND PROCESS FOR PREPARATION THEREOF
申请人:EVONIK DEGUSSA GMBH
公开号:US20170158590A1
公开(公告)日:2017-06-08
Novel heterocyclic selenabisphosphites, process for preparation thereof and use thereof as ligand unit for preparing ligands for use in complexes.
新型杂环硒代二亚磷酸酯,其制备方法和作为配体单元用于制备配合物配体的用途。
Solvent‐Dependent Facile Synthesis of Diaryl Selenides and Biphenols Employing Selenium Dioxide
作者:Thomas Quell、Michael Mirion、Dieter Schollmeyer、Katrin M. Dyballa、Robert Franke、Siegfried R. Waldvogel
DOI:10.1002/open.201500206
日期:2016.4
structures by the use of selenium dioxide, a stable, powerful, and commercially available oxidizer. Our new, and easy to perform protocol gives rise to biphenols and diaryl selenides depending on the solvent employed. Oxidative treatment of phenols in acetic acid yields the corresponding biphenols, whereas conversion in pyridine results in the preferred formation of diaryl selenides. As a consequence, we