A series of 2-(hetero)aryl-4-phosphorylated quinazolines was successfully synthesized in moderate to excellent yields via a palladium-catalyzed C–O/P–H cross-coupling reaction of 4-(tosyloxy)quinazolines with H-phosphonates and phosphine oxides. This efficient and green methodology provides an alternative straightforward protocol for the introduction of phosphorus groups to quinazoline compounds at the C4 position via C–O activation.
Key words
palladium catalysis - 4-(tosyloxy)quinazoline - H-phosphonates - phosphine oxides - 4-phosphorylated quinazolines - cross-coupling