A convenient preparation of 1,3-disubstituted dihydro-2,4-(1<i>H</i>,3<i>H</i>)pyrimidinediones
作者:L. M. Deck、E. P. Papadopoulos
DOI:10.1002/jhet.5570370401
日期:2000.7
from 3-(benzylamino)propanenitrile (1) and various isocyanates (2) cyclize readily upon heating in ethanol, in the presence of hydrochloric acid, to form 3-substituted 1-benzyldihydro-2,4-(1H,3H)pyrimidinediones (11) in good yield.