“…IR (KBr): υ = 3304.2, 2923.4, 1633.9, 1595.6, 1291.7, 811.2.LC-MS for C 17 H 20 N 2 O (268.35): m/z = 269.32 [M + H] + .Synthesis of (S)-1-benzyl-1-(1-phenylethyl)-3-(p-tolyl)urea (3b) Compound (3b) was synthesized from 4-methylphenyl isocyanate (0.25 g, 1.87 mmol) and (S)-(-)-N-benzyl-α-methylbenzylamine (0.39 g, 1.87 mmol), according to the general procedure. It was a white solid; yield-76% (0.49 g) 1. H NMR (DMSO-d 6 , 500 MHz): δ 8.26 (s, 1H), 7.38-7.33 (m, 4H), 7.30 (d, J = 8.6 Hz, 2H), 7.28-7.24 (m, 3H), 7.20-7.15 (m, 3H),7.02 (d, J = 8.0 Hz, 2H), 5.72 (q, J = 7.5 Hz, 1H), 4.68 (d, J = 17.8 Hz, 1H), 4.16 (d, J = 17.2 Hz, 1H), 2.21 (s, 3H), 1.44 (d, J = 7.5 Hz, 3H).…”