Unusual Amination by Cleavage of an Exocyclic C - N Linkage with Formamide ') ... Vishnu J. Ram* and Dinesh S. Kushwaha ... Medical Chemistry Division, Central Drug Research Institute, Lucknow 226001, India ... Synthesis of various 3-alkyl-2-( l-pyrazolyl)-4(3H)-quinazolinones (1 a - g) and their amination with formamide under different reaction conditions are described. ... Nucleophilic displacement of alkylthio or halo groups by am- monia or ...
