A Three-Component Coupling Process Based on Vicarious Nucleophilic Substitution (VNS<sub>AR</sub>)−Alkylation Reactions: An Approach to Indoprofen and Derivatives
作者:Nicholas J. Lawrence、John Liddle、Simon. M. Bushell、David A. Jackson
DOI:10.1021/jo0159901
日期:2002.1.1
The intermediate anion derived from the vicarious nucleophilic substitution (VNS) of hydrogen reacts with a series of alkyl halides to generate the corresponding alpha-alkylated conventional VNS product in a one-pot process. This one-pot VNS-alkylation reaction offers a convenient route to a range alpha-substituted nitrobenzyl phosphine oxides, sulfones, and esters via a three-component coupling reaction
α-Fluorination of Nitrobenzenes and Nitropyridines via Vicarious Nucleophilic Substitution of Hydrogen
作者:Michael F. Greaney、Fayez Y. Al-Mkhaizim
DOI:10.1055/s-0039-1690862
日期:2020.7
A highly selective C–H functionalization of nitrobenzenes and nitropyridines is reported using tandem vicarious nucleophilicsubstitution (VNS) chemistry with electrophilic fluorination using Selectfluor®. The process generates tertiary benzylic fluorides in good yield under simple, mild conditions and short reaction times.