78754-91-3Relevant articles and documents
Reactions of o-Aminonitriles with Isocyanates. 2. A Facile Synthesis of Imidazoquinazoline-2,5-(3H,6H)dione
Papadopoulos, Eleftherios Paul
, p. 515 - 518 (2007/10/02)
Anthranilonitrile reacts with ethyl isocyanatoacetate to form 2-(3-ethoxycarbonylmethylureido)benzonitrile (3b) which, upon heating, or treatment with a base, undergoes a double cyclization to yield imidazo-quinazoline-2,5-(3H,6H)dione (5) in excel