Δ2-Isoxazoline derivatives. Part X. 1,3-Dipolar cycloadditions of nitrones and nitrile oxides with indene, 1,2-dihydronaphthalene, and trans-1-phenylpropene
Abstract
Reactions of cyclic and acyclic nitrones and nitrile oxides with 1,2-dihydronaphthalene, indene, and trans-1-phenylpropene give rise to mixtures of regioisomers. The results are analysed on the basis of frontier orbital interactions and the steric requirements of reagents.