HCID 178524014, compound → HCID 178477821, compound

Participants

Reaction Steps

7-Bromo-8-chloroquindoline-11-carboxylic acid from Example 74 (3.00 g, 7.99 mmol) was refluxed at 250° C. in diphenyl ether (30 mL) for 4 hours in an oversize flask. The mixture was cooled, diluted with petroleum ether (30 mL), and filtered. The filter cake was washed with petroleum ether (100 mL) and dried under high vacuum to yield 2.49 g (94%) of the title compound as a greenish solid, mp >246° C.; 1H NMR (DMSO-d6) δ 11.70 (s, 1H), 8.62 (s, 1H), 8.36 (s, 1H), 8.18 (d, J=8.4, 1H), 8.12 (d, J=8.4, 1H), 7.84 (s, 1H), 7.69 (t, J=6.8, 1H), 7.59 (t, J=7.2, 1H); 13C NMR (DMSO-d6) δ 143.65, 143.15, 133.39, 132.95, 128.65, 127.66, 127.97, 126.75, 125.51 (two signals), 121.53, 114.34, 113.10, 111.11; MS (EI, m/z) 331.9 (M+2+)

Provenance & Evidence