¹H NMR Data, δ, ppm, Multiplicity

NH₂ NH CH₃ Aromatic protons Aromatic Substituent

I

6.55, s ^a 8.85, s 2.30, s 7.40 - 7.55, m -

II

8.00, s 10.25, s 2.30, s 7.40, d - 7.95, d -

8.30, s

III

8.05, s 10.45, s 2.40, s 8.15, d - 8.30, d -

8.45, s

IV

7.00, s ^a 10.10, s 2.30, s 7.25 - 7.80, m 2.15, s

V

8.20, s ^a 10.10, s 2.25, s 7.40 - 7.50, m 3.80, s