Copper(I)-catalyzed solvolysis of gem-chlorofluoro- and gem-bromofluorocyclopropanes. Preparation of 2-fluoroallylic ethers, esters and alcohols
作者:Maxim A. Novikov、Nikolai V. Volchkov、Maria B. Lipkind、Oleg M. Nefedov
DOI:10.1016/j.jfluchem.2015.09.001
日期:2015.12
Copper(I)-catalyzed solvolysis of gem-chlorofluoro- and gem-bromofluorocyclopropanes in MeOH, NaOAc/AcOH, NaOAc/DMF, HCO2Na/HCO2H or water/dioxane affords 2-fluoroallylic ethers, esters or alcohols in moderate to excellent yields. The reaction pathway involves isomerization of gem-fluorohalocyclopropanes to 2-fluoroallylic halides followed by nucleophilic substitution of a halide onto an O-nucleophile
铜(I)催化的宝石-氯氟环己烷和宝石-溴氟环丙烷在MeOH,NaOAc / AcOH,NaOAc / DMF,HCO 2 Na / HCO 2 H或水/二恶烷中的溶剂化提供了中等至中度的2-氟烯丙基醚,酯或醇优异的产量。该反应途径涉及宝石-氟卤代环丙烷异构化为2-氟烯丙基卤化物,然后将卤化物亲核取代成O-亲核体。我们在制备合成中开发的方法的适用性在100–200 mmol范围内得到证明。