“…According to the typical procedure amine 3b was obtained from imine 2b and (3,4dimethoxybenzyl)magnesium chloride (1a) in 80% yield: mp 104-106 °C (n-heptane); [R] 20 D ) +62.3 (c ) 0.1, EtOH); 1 H NMR (CDCl3) 2.10 (br s, 2H), 2.88 (dd, 1H, J ) 13.4, 6.9), 2.97 (dd, 1H, J ) 13.4, 6.4), 3.53 (dd, 1H, J ) 10.6, 6.9), 3.66-3.88 (m, 15H), 6.44 (d, 1H, J ) 1.9), 6.51-6.73 (m, 5H), 7.14-7.29 (m, 5H); 13 C NMR (CDCl3) 43.5, 55.6, 55.7, 55.8, 61.6, 61.8, 65.5, 110.2, 110.7, 110.8, 112.6, 119.3, 121.3, 127.1, 127.3, 128.4, 131.0, 136.0, 141.1, 147.3, 147.9, 148.4, 148.7; IR (KBr) υ 3520-3200 cm -1 ; MS (EI) m/z (rel intensity) 300 (100), 285 (51), 225 (16), 207 (9), 151 (12), 128 (9), 119 (8), 91 (7), 77 (5). Anal.…”