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Communication | Special issue | Vol 97, No. 1, 2018, pp.147-150
Published online, 28th December, 2017
DOI: 10.3987/COM-17-S(T)7
Enantioselective Cycloadditions between Aliphatic Nitrile Oxides and 2-Hydroxystyrenes Catalyzed by Chiral Amine-Urea

Yasunori Toda, Masato Koyama, Hiroyoshi Esaki, Kazuaki Fukushima, and Hiroyuki Suga*

*Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan

Abstract

Chiral amine-urea-catalyzed enantioselective 1,3-dipolar cycloadditions of nitrile oxides with 2-hydroxy-3-methoxystyrene are described. Aliphatic aldehyde-derived hydroximoyl chlorides were used as nitrile oxide precursors, providing optically active isoxazolines with moderate to good enantioselectivities.