2-Fluoro-4-nitrophenol → 7-(2-Fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridine

Participants

Reaction Steps

A mixture of the 7-chloro-2-iodothieno[3,2-b]pyridine (23) (Ragan J. A. et al, Organic Process Research and Development 2003, 7, 676-683) (7.0 g, 23.7 mmol), 2-fluoro-4-nitrophenol (3) (11.15 g, 71.1 mmol), K2CO3 (13.08 g, 94.8 mmol) in Ph2O (30 ml) was heated at 200° C. for 3 h. The reaction mixture was cooled to room temperature, diluted with DCM and filtered; the filtrate was collected and then concentrated. The resultant solid was triturated with diethyl ether, to afford intermediate 24 (7.3 g, 74% yield), which was used directly in the next step with no additional purification. MS (m/z): 417.0 (M+H).

Provenance & Evidence