申请人:Ethyl Corporation
公开号:US04502995A1
公开(公告)日:1985-03-05
Fluoronitrolarylacetonitriles are prepared by reacting a fluoronitroaromatic compound having a nitro substituent, at least one fluoro substituent, and at least one replaceable hydrogen on (1) a benzene ring bearing at least one other innocuous substituent, (2) a heterocyclic aromatic ring, or (3) a carbocyclic aromatic ring of a polycyclic ring structure with an alpha,alpha-disubstituted acetonitrile in an inert solvent and in the presence of a base so that the nitrile undergoes a nucleophilic substitution on an unsubstituted ring carbon of the fluoronitroaromatic compound during which an alpha-substituent functions as a leaving group.
通过在惰性溶剂中,在碱的存在下,将具有硝基取代基、至少一个氟取代基和至少一个可替代氢的氟硝基芳香化合物与α,α-二取代乙腈反应制备氟硝基芳基乙腈。在这个过程中,腈基在氟硝基芳香化合物的一个未取代的环碳上发生亲核取代,α-取代基作为离去基团。