AN ANOMALOUS HOUBEN-HOESCH REACTION AND SOME APPLICATIONS IN ARYLATION REACTIONS
作者:F. Sánchez-Viesca、María R. Gómez、Martha Berros
DOI:10.1080/00304940409355384
日期:2004.4
The Houben-Hoesch synthesis of from activated aromatic substrates and nitriles in the presence of HC1 and ZnC1, has been reviewed by Ruske." An abnormal HoubenHoesch reaction of resorcinol with f&ketonitriles,5 proceeds first via the keto group and then the nitrile to afford coumarins. This reaction falls within the scope of the von Pechmann reaction.6 This communication reports a drastic deviation
important method to prepare pharmaceutical and chemical intermediate aromatic ketones, Friedel–Crafts (F–C) acylation is used to seek a novel catalytic system which is imminently consistent with the concept of green chemistry. In this study, six deep eutectic solvents (DES) were synthesized for the Friedel–Craftsacylation reaction as a catalytic solvent. Among the six DES, choline chloride-zinc chloride