By refluxing IIa' wit,h phenyl isocyanate in benzene for 2 hr. the adduct was obtained. ( b ) Reaction of O-p-tolyl-2V,N-ethyleneurethane (Ie) with pphenetidine at 0". A 1.77-g. sample (0.010 mole) of Ie and 1.37 g. (0.010 mole) of p-phenet,idine were mixed together a t 0", and stored in a refrigerator for a week. By recrystallization of the product from et
