1,3-Dipolar cycloadditions of Arylcarbonitrile Oxides and Diaryl Nitrilimines with Some 2-Arylmethylene-1,3-Indanediones;regiochemistry of the Reactions †
Ring-closure reaction affording spiroisoxazolines and spiropyrazolines via a 1,3-dipolar cycloaddition between the title compounds, occurs with high regioselectivity.
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