Manganese‐ Mediated Cascade Radical Oxidative Cyclization/1,6‐Conjugate Addition of Unsaturated Oximes with p‐Quinone methides: Facile Access to β,β‐Diarylmethine Isoxazolines

A simple and efficient strategy for the synthesis of structurally diverse β,β‐diarylmethine substituted isoxazoline derivatives have been developed. This approach employs a manganese‐promoted oxidative cyclization coupled with a 1,6‐conjugate addition of unsaturated oximes to p‐quinone methides. The key features of this study include the formation of C‐O and C‐C bonds through intramolecular and intermolecular interactions, facilitated by in situ generated iminoxyl radicals. β,β‐diarylmethine substituted isoxazolines, bearing a wide range of functional groups, were isolated in high yields