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
衍生自氢的亲核取代基(VNS)的中间阴离子与一系列烷基卤化物反应,以一锅法生成相应的α-烷基化的常规VNS产物。一锅式VNS烷基化反应通过三组分偶联反应为一系列α-取代的硝基苄基膦氧化物,砜和酯提供了便捷的途径。α-氯乙基苯基砜(14)和2-氯丙酸乙酯(16)与硝基苯反应,随后加入烷基化剂,得到一系列带有α-芳基季中心的砜和酯。VNS-烷基化方案已被用于使用廉价的起始原料从硝基苯合成吲哚洛芬的衍生物。