Cyclisations in anhydrous hydrogen fluoride; derivatives of diethyl phenylmalonate
Abstract
A number of ethoxycarbonylalkyl derivatives of diethyl phenylmalonate cyclise in anhydrous hydrogen fluoride giving derivatives of indanone and of tetralone. An ethoxycarbonylpropyl derivative gave a novel 9,10-dioxo-5,8-methanobenzocycloheptene (16).