“…C NMR (100 MHz, d4-MeOH): 157.2 (NH-C=NH), 41.1 (-CH2-NH-), 31.1, (-CH2-CH2-NH-), 28.5, 26.0, 22.2, 12.9 (-CH3) ppm. NMR spectra is similar to spectra of the tosylate salt of the same compound synthesized by Katritzky et al14 Synthesis of 2b:General procedure B lead to 2b as an oil (94 mg, 0.45 mmol, 59% yield). 1 H NMR (400 MHz, d4-MeOH): δ = 3.16 (t, 2H, J = 7.0 Hz, -CH2-NH-), 1.58 (p, 2H, J = 7.1 Hz, -CH2-CH2-NH-), 1.43 -1.25 (m, 10H, 5 x CH2), 0.91 (t, 3H, J = 7.0 Hz, CH3) ppm 13.…”