A practical method for the umpolung selenocyanation of aryl ketones, alkyl ketones, β-ketoesters and electron-rich arenes has been developed, affording various selenocyanates in moderate to excellent yields. This transformation proceeds by an oxidative umpolung selenocyanation through nitrogen oxides-mediated electrophilic selenocyanation process. This method is simpler, more efficient, and less costly
A novel metal-free method for the selenocyanation of aromatic ketones to afford α-carbonyl selenocyanates
作者:Kai Sun、Yunhe Lv、Yao Chen、Tingting Zhou、Yanyan Xing、Xin Wang
DOI:10.1039/c7ob00958e
日期:——
new method has been developed for the selenocyanation of aromatic ketones. This reaction avoids the need to use pre-prepared α-halo ketones, providing rapid access to α-carbonyl selenocyanates. We also investigated the mechanism for this reaction and found that it proceeds via sequential radical iodination and nucleophilicsubstitution reactions.
N-Selenocyanato-Dibenzenesulfonimide: A New Electrophilic Selenocyanation Reagent
作者:Zhi-Min Chen、Deng Zhu、Ai-Hui Ye
DOI:10.1055/a-1493-6885
日期:2021.10
A new electrophilic selenocyanation reagent N-selenocyanato-dibenzenesulfonimide was readily prepared in two steps from commercially available dibenzenesulfonimide for the first time. A variety of electrophilic selenocyanato reactions of nucleophiles have been achieved using it as selenocyanato source under mild and simple conditions. Numerous SeCN-containing compounds were obtained in moderate to
Nucleophilic Selenocyanation from Selenium Dioxide and Malononitrile
作者:Sébastien Redon、Patrice Vanelle
DOI:10.1055/a-1938-2443
日期:2023.2
The first nucleophilic selenocyanation from seleniumdioxide and malononitrile is described. This methodology produced a wide variety of selenocyanates from halides in moderate to excellent yields under mild conditions, highlighting the versatility and usefulness of this new source of nucleophilic selenocyanation.