3+2] CYCLOADDITION OF <i>o</i>-NITROPHENYL AZIDE TO 3<i>а</i>,6-EPOXYISOINDOLES
DOI:
https://doi.org/10.1007/4048Keywords:
1, 2, 3-benzotriazoles, 3а, 6-epoxyisoindoles, 4, 8a-epoxy[1, 3]triazolo[4, 5-e]isoindoles, о-nitrophenyl azide, [3 2] cycloaddition, 3-dipolar cycloaddition.Abstract
[3+2] Cycloaddition of о-nitrophenyl azide to the multiple bond of oxabicyclo[2.2.1]heptene moiety in substituted 3а,6-epoxyisoindoles was performed. The 1,3-dipolar addition reaction proceeded stereoselectively, producing a pair of isomeric cis-4,8a-epoxy[1,2,3]triazolo-[4,5-e]isoindoles. This approach demonstrated synthetic access to isomeric epoxy-1,2,3-benzotriazoles fused with a γ-butyrolactam moiety.