Summary Cinchophen and certain of its 4'-substituted analogs have been prepared by rearrangement, respectively, of 3-phenacylidene oxindole and para-substituted phenacylidene oxindoles under the influence of mineral acid. IVEW YORK, NY RECEIVED NOVEMBER 2, 1933 ... [CONTRIBUTION FROM THE SCHOOL OF CHEMISTRY OF THE UNIVERSITY OF MINNESOTA] The Reaction between Duroquinone and Sodium Malonic Esters. 11. The ...