• The defining signal of the 3,5-disubstituted Δ2-isoxazoline is the symmetric couplet of peaks from the 2.5 ppm to 3.4 ppm range

  • The Lead (II) Acetate reaction (top left) had the strongest signals in this area

  • The Nickel (II) Chloride one equivalent (top right) showed traces of this signal

  • The Palladium (II) Chloride (bottom left) may have had traces, but the peaks were indistinguishable

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• The couplet of symmetric peaks at 6.9 ppm and 7.6 ppm on the x-axis represent the benzene ring, which is shown to be destroyed in the Palladium (II) Chloride catalyzed reaction

  • Only the two cyclizations with Copper (II) Chloride (5% Nickel (II) Chloride and 5% Palladium (II) Chloride) had their benzene rings disintegrated

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• The oxime (bottom right) is shown for comparison to show the differences between the structures