1,3‐Dipolar Cycloaddition Reaction of 4,5‐Dihydro‐1H‐imidazole 3‐Oxides with Alkynes.

Abstract

Isoxazole derivatives R 0240 1,3-Dipolar Cycloaddition Reaction of 4,5-Dihydro-1H-imidazole 3-Oxides with Alkynes. -The high regioselectivity of the title reaction is explained by the presence of the nitrogen atom conjugated with a nitrone group in starting imidazoles (I). -(POPOV*, S. A.; CHUKANOV, N. V.; ROMANENKO, G. V.; RYBALOVA, T. V.; GATILOV, Y. V.; REZNIKOV, V. A.; J.