Heterocycles from Heterocycles: 1,3-Dialkyl-4,5-imidazolidinediones from 1,3,5-Trialkylhexahydro-1,3,5-triazines and Oxalyl Chloride

1,3-Dialkyl-4,5-imidazolidinediones (5) were prepared by the reaction of oxalyl chloride (3) with the corresponding 1,3,5-trialkyl-hexahydro-1,3,5-triazines (4), followed by addition of ethanol, in good to fair yields and fully characterized by MS, IR,1H and13C NMR.