Water → 3-Fluoro-4-((2-iodothieno[3,2-b]pyridin-7-yl)oxy)aniline

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-amino-2-fluorophenol (1.83 g, 14.38 mmol) in DMSO (30 mL) was added potassium tert-butoxide (1.61 g, 14.38 mmol). After 15 min, 7-chloro-2-iodothieno[3,2-b]pyridine (2.5 g, 8.46 mmol, Ragan J. A. et al, Organic Process Research and Development, 2003, 7. 676-683) was added and the reaction mixture was heated at 100° C. for 60 min. The mixture was cooled down to RT then poured into water (250 mL) at 40-45° C. and stirred for 30 min. The precipitate was collected by filtration, washed with water, dried and purified by flash column chromatography on silica gel (eluent 60% EtOAc in Hexane) to afford title compound 268 (1.06 g, 32% yield) as a brown solid. 1H NMR (300 MHz, CDCl3) δ (ppm): 8.41 (d, J=5.4 Hz, 1H), 7.75 (s, 1H), 7.03 (t, J=9.0 Hz, 1H), 6.57-6.45 (m, 3H), 3.83 (s, 2H).

Provenance & Evidence