Copper-catalysed radical cascade reaction of N-(2-oxo-2-phenylethyl) substituted 2-pyridones with styrene to access 1,6-carboannulated 2-pyridone scaffolds

Herin, we present a DTBP-mediated 3 + 2 cycloaddition reaction between N -(2-oxo-2-phenylethyl) substituted 2-pyridones and styrene; this reaction can afford 1,6-carboannulated 2-pyridone scaffolds with up to 79% yields.