Anthranilic Acid → Quinazoline

Participants

Reaction Steps

treating the acetylanthranil compound of step (4) with MeOH, followed by hydrochloric acid, to obtain a compound of the formula: ##STR46## , or (5a') treating the anthranilic acid of step (3) with phosgene or triphosgene to form a compound of the formula: ##STR47## which is further treated with methanol; (5b) reacting the product of step (5a) or (5a') with chloroformamidine hydrochloride to obtain a quinazoline compound of the formula: ##STR48## then subjecting the resulting quinazoline compound to a displacement reaction as set forth in step (6) discussed above to obtain a compound according to formula I.

Provenance & Evidence