Synthesis of 4‐Aryl‐5,5‐dimethyl‐5H‐1,2,3‐triazoles and 4‐Aryl‐3‐cyano‐5,5‐dimethyl Δ¹‐Pyrazolines by Cycloaddition of 2‐Diazopropane with Iminoethers and Propenenitriles.

Abstract

Propenenitriles. -1,3-Dipolar cycloaddition of 2-diazopropane (II) to iminoethers (I) and 3-arylpropene nitriles (V) and (VII) occurs regioselectively leading to the synthesis of triazoles (IV) and ∆ 1 -pyrazolines (VI) and (VIII), respectively. -(TOUMI, B.; HARIZI*, A.; Tetrahedron Lett. 47 (2006) 37, 6685-6687; Dep. Sci. Fondament., Inst. Super. Technol. Med., 1006 Tunis, Tunisia; Eng.) -Mais 52-132