“…, 2848, 1729, 1584; δ H (300 MHz; CDCl 3 ) 7.23 (1H, dd, J 8.1, 0.9, ArH), 7.01 (1H, t, J 7.8, ArH), 6.71 (1H, d, J 7.8, ArH), 4.28 (3H, s, OMe), 3.93 (6H, s, NMe, OMe), 2.53 (3H, s, Me); δ C (100 MHz; CDCl 3 ) 163.4, 148.0, 129.3, 129.2, Recrystallised (light petroleum), mp 90-92 ЊC (Found: C, 66.7; H, 6.7; N, 5.9. C 13 H 15 NO 3 requires C, 66.9; H, 6.5; N, 6.0%); ν max (KBr)/cm Ϫ1 2999, 2980, 2841, 1703, 1611, 1578; δ H (300 MHz; CDCl 3 ) 7.22 (1H, t, J 8.1, ArH), 6.91 (1H, d, J 8.4, ArH), 6.44 (1H, d, J 7.7, ArH), 3.94 (3H, s, OMe), 3.93 (3H, s, OMe), 3.92 (3H, s, NMe), 2.77 (3H, s, Me); δ C (100 MHz; CDCl 3 ) 163.6, 156.7, 140.5, 126,0 (CH), 123.9, 122.0, 117.3, 103.0 (CH), 99.3 (CH), 55.1 (Me), 51.2 (Me), 32.3 (Me), 12.8 (Me); m/z (EI) 233 (M ϩ , 100%), 219 (8), 218 (69), 174(19), 130(23), 89(34).Methyl 1,3-dimethyl-6-methoxyindole-2-carboxylate 4d2 . Recrystallised (light petroleum) to give a colourless crystalline solid, mp 93-94 ЊC; (Found : C, 66.9; H, 6.7; N, 5.9); ν max (KBr)/ cm Ϫ1 3019, 2954, 2848, 1710, 1637, 1571; δ H (300 MHz; CDCl 3 ) Method 1 gave only starting material.…”