(VII, Table 11, 47) was obtained by the reduction of 2-isopropyl-l-phenyl-4 (1H)- quinazolinone (3, Table I) with sodium borohydride. The reaction of 2-anilinobenzonitrile with isopropylmagnesium bromide, followed by careful quenching with water, gave the ketimine VIII, which was converted to 4-isopropyl-l-phenyl-2 (1H)-quinazolinone (IX, Table 11, 44) by cyclization using phosgene. N-Isopropylanthranilic acids X were prepared by ...