1,3‐Dipolar cycloaddition of nitrile oxides to N‐vinylcarbazole: Regioselective formation of 5‐(9‐carbazolyl)‐Δ2‐isoxazolines

Abstract
Aryl substituted nitrile oxides undergo 3 + 2 cycloaddition to N‐vinyl carbazole to afford only one regioisomer, i.e., 3‐aryl substituted 5‐(9‐carbazolyl)‐Δ2‐isoxazolines III in good yield.