1-Phenylnaphthalene. Part VI. Action of Grignard reagents on 1-phenyl- and 7-methoxy-1-p-methoxyphenyl-2,3-naphthalene-dicarboxylic anhydrides
Abstract
Grignard reagents react with 1-aryl-2,3-naphthalenedicarboxylic anhydrides to give the lactones of 3-(2-carboxy-1-arylnaphthyl)diarylmethanols. Some of these lactones are isomerised with concentrated sulphuric acid to the corresponding 7H-benzo[c]fluoren-7-ones.
The structure of the products is established by a study of their infrared spectra.