Acetic Acid → HCID 23505999, compound

Participants

Reaction Steps

EX-473A) 3-Aminobenzenethiol (2.4 mL, 22.5 mmol) and 3-(1,1,2,2-tetrafluoro-ethoxy)benzaldehyde (5 g, 22.5 mmol) were dissolved in 40 mL of dichloroethane and acetic acid (1.35 mL, 23.7 mmol), then solid NaBH(OAc)3 (6.2 g, 29.3 mmol) was added. The mixture was stirred at room temperature for 18 hours, then quenched with water and diluted with dichloromethane. The organic layer was washed with aqueous saturated sodium bicarbonate, then dried over MgSO4, and concentrated in vacuo. The crude product was purified by flash column chromatography on silica gel eluting with ethyl acetate:hexane 1:10 to give 5.36 g (72%) of the desired 3-[[[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]benzenethiol product as a brown oil. 1H NMR (CDCl3) δ3.4 (s, 1H), 4.4 (s, 2H), 5.9 (tt, 1H), 6.4 (dd, 1H), 6.55 (m, 1H), 6.65 (d, 1H), 7.05 (t, 1H), 7.2-7.4 (m, 4H).

Provenance & Evidence