“…Our present communication describes the preparation of ortho-and para-(9-anthryl)benzoic acids by this reaction. One of the acids, the ortho (III), has been prepared previously by Cook (3) and by Scholl and Donat (1) through reduction of the lactone of 9-hydroxy-9-(o-carboxyphenyl) anthrone. In the present work, the Grignard reagent (I) prepared from 2-bromodiphenylmethane was allowed to react with phthalic anhydride to yield 2-benzylbenzophenone-2'-carboxylic acid (II).…”