Reaction of Cycloalkene‐1‐carboxamides with Aryl Boronates via Rhodium(III)‐Catalyzed C−H Activation: A Versatile Route to 3,4‐Cycloalkaquinolin‐2(1H)‐ones

Under rhodium(III) catalysis, substituted N‐methoxycycloalkene‐1‐carboxamides successfully reacted with aryl boronic acid pinacol esters to provide 3,4‐cycloalkaquinolin‐2(1H)‐ones via direct functionalization of the β‐alkenyl C−H bond and form C−C/C−N bond in one pot. The gram‐scale synthesis of the title compound demonstrated the great synthetic utility of this methodology.