Lewis acid catalyzed synthesis of 4-aminopyrrolo[1,2-a]quinolin-5-ol derivatives from 2-(1-pyrrolyl)benzaldehyde and isocyanides
Reaction of 2-(1-pyrrolyl)benzaldehyde with isocyanides in the presence of a catalytic amount of boron trifluoride diethyl etherate was followed by treatment with acetic anhydride in pyridine to give the corresponding O-acetyl derivatives of 4-alkyl(or ar