“…The solid precipitate was collected, washed with water, dried and recrystallised by ethanol to afford the desired product 3. 5.08 (d, 1H, H a , J = 2.0Hz), 7.14-7.17 (m, 1H, aromatic), 7.20-7.23 (m, 2H, aromatic), 7.27-7.30 (m, 2H, aromatic), 7.40-7.44 (m, 3H, aromatic), 7.54 (d, 2H, aromatic, J = 7.5Hz), 7.67 (d, 2H, aromatic, J = 9.0Hz), 7.79 (d, 2H, aromatic, J = 9.0Hz), 8.04 (d, 2H, aromatic, J = 9.0Hz), 8.34 (d, 2H, aromatic, J = 8.5Hz). 13 C NMR (500MHz CDCl 3 ) δ = 40.18, 45.68, 46.69, 49.69, 51.05, 74.36, 112.79 (CN), 112.83 (CN), 123.95, 124.45, 128.10, 128.33, 128.55, 128.84, 130.01, 134.56, 136.54, 140.18, 142.63, 142.65, 148.38, 148. …”