Phenol, 4-amino-2-fluoro- → 4-[[2-[5-[[Boc(2-methoxyethyl)amino]methyl]-2-pyridyl]-7-thieno[3,2-b]pyridyl]oxy]-3-fluoroaniline

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 4-amino-2-fluorophenol (4) (1.933 g, 15.21 mmol) in DMSO (30 mL) was added potassium tert-butoxide (2.017 g, 17.97 mmol). After 30 min, intermediate 11 (6 g, 13.83 mmol) was added and the reaction mixture was heated at 100° C. for 45 min. The reaction mixture was then cooled down, poured in water (250 mL) at 40-45° C. and the resultant suspension was stirred for 30 min. The precipitate was collected by filtration, washed with water (2×30 mL) and dried overnight. The dry solid was triturated with Et2O (50 mL), to afford intermediate 13 (4.18 g, 58% yield) as a brown solid. MS (m/z): 525.2 (M+H).

Herkunft & Nachweise