Article ID Journal Published Year Pages File Type
5221802 Tetrahedron 2011 6 Pages PDF
Abstract

The nucleophilic fluorination of 1,2,2-triaryl-2-hydroxyethanones by fluoride ion has been carried out using pyridinium poly(hydrogen fluoride) (PPHF) to give 1,2,2-triaryl-2-fluoroethanones in fairly good yield. The presence of electron withdrawing group (EWG), such as -COAr at the carbon bearing hydroxyl group facilitates such nucleophilic fluorination. The intermediacy of bridged oxiranyl ion and α-ketocarbenium ion has been proposed for the formation of various α-fluoroketones and benzofuran derivatives respectively.

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Physical Sciences and Engineering Chemistry Organic Chemistry
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