THE SYNTHESIS OF SOME 5,5-SUBSTITUTED HYDANTOINS

Some 3,4-dimethoxybenzyl ketones are prepared by the action of different acid anhydrides on homoveratric acid. From these ketones the following 5,5-substituted hydantoins are synthesized: 5-methyl-5-(3′,4′-dimethoxybenzyl)-hydantoin, m.p. 240—1°; 5-ethyl-5-(3′,4′-dimethoxybenzyl)-hydantoin, m.p. 224—225.5°; and 5,5-di-(3′,4′-dimethoxybenzyl)-hydantoin, m.p. 293—4.5. The infrared spectra of the last two compounds are recorded.