4-Fluoro-3-(trifluoromethyl)aniline → HCID 178432351, compound

Participants

Reaction Steps

Under inert atmosphere to a solution of methyl 7-[(2-chloro-6-fluorophenyl)amino]-2-methyl-8H-imidazo[4,5-e][1,3]benzoxazole-4-carboxylate (Step-3 of Intermediate-56, 0.100 g, 0.297 mmol) in dry toluene was added 4-fluoro-3-trifluoromethyl aniline (0.080 g, 0.446 mmol) and trimethyl aluminium (2.0 M solution in toluene) (0.037 g, 0.516 mmol). The reaction mixture was refluxed for 1 h. The reaction mass was quenched in water and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulphate and concentrated. The obtained crude was purified by column chromatography on basic alumina eluting with 0.75-1% DCM: MeOH to afford 0.030 g of the desired product. 1HNMR (DMSO-d6): δ 2.65 (s, 3H), 7.40-7.57 (m, 4H), 7.65 (s, 1H), 8.06 (m, 1H), 8.30 (s, 1H), 9.37 (s, 1H), 10.40 (s, 1H), 11.68 (s, 1H); MS [M+H]+: 522.14.

Provenance & Evidence