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 facile preparation of α,α′-dicarbonylselenides has been performed by reaction of α-carbonyl selenocyanates with an enolate, electrogenerated by reduction of a carbon–halogen bond.
Selenocyanation of Aryl and Styryl Methyl Ketones in the Presence of Selenium Dioxide and Malononitrile: An Approach for the Synthesis of α-Carbonyl Selenocyanates
作者:Ibakyntiew D. Marpna、Kmendashisha Wanniang、Tyrchain Mitre Lipon、O. Risuklang Shangpliang、Bekington Myrboh
DOI:10.1021/acs.joc.0c02630
日期:2021.1.15
α-carbonyl selenocyanates from aryl methyl ketones/styryl methyl ketones using selenium dioxide as the selenating agent under simple reaction conditions. This reaction has notable advantages over the traditional methods in terms of accessibility and affordability of the starting materials. The method features the interaction of aryl methyl ketones/styryl methyl ketones with selenium dioxide and malononitrile
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.