Reaction Steps
4-Bromo-2-methylaniline (5.58 g, 30 mmol) was treated with iodine (0.2 g, 0.9 mmol) and acetone (150 mL) in a sealed tube at 80° C. for 24 h to provide 6-bromo-1,2-dihydro-8-methylquinoline (Compound 85 of Scheme XXII) in 9% yield as a yellow oil (0.70 g). Most of the aniline (>80%) was recovered. A mixture of the 6-bromo-1,2-dihydro-8-methylquinoline (90 mg, 0.33 mmol), 3-nitrobenzeneboronic acid (167 mg, 1.0 mmol), Pd(PPh3)4 (24 mg, 0.02 mmol), K2CO3 (190 mg, 1.38 mmol) in toluene (7 mL) and water (1.5 mL) was heated at 70° C. for 16 h. Standard work-up followed by chromatography afforded 23 mg (23%) of Compound 292 as a yellow oil. Data for Compound 292: IR (neat) 3412, 2966, 1602, 1530, 1348; 1H NMR (400 MHz, CDCl3) 8.38 (t, J=2.0, 1H), 8.08 (dd, J=7.8 and 2.0, 1H), 7.85 (d, J=7.8, 1H), 7.52 (t, J=7.8, 1H), 7.24 (d, J=11.7, 1H), 7.21 (d, J=1.9, 1H), 5.39 (s, 1H), 3.72 (bs, 1H), 2.18 (s, 3H), 2.07 (s, 3H), 1.34 (s, 6H); 13C NMR (100 MHz, CDCl3) 148.9, 143.7, 142.0, 132.2, 129.6, 128.8, 128.7, 128.6, 126.5, 121.3, 121.0, 120.7, 120.6, 120.3, 52.3, 31.9, 19.2, 17.3.
