Diphenyl Ether → (3-(tert-Butyldimethylsilyloxy)azetidin-1-yl)(7-(2-fluoro-4-nitrophenoxy)thieno[3,2-b]pyridin-2-yl)methanone

Participants

Reaction Conditions

Reaction Steps

A mixture of (3-(tert-butyldimethylsilyloxy)azetidin-1-yl)(7-chlorothieno[3,2-b]pyridin-2-yl)methanone 272 (749.7 mg, 1.96 mmol) (WO 2006/010264), 2-fluoro-4-nitrophenol (461 mg, 2.94 mmol), K2CO3 (518 mg, 3.92 mmol) and Ph2O (2.6 mL) was stirred in a sealed tube for 1.5 h at 170° C. The mixture was diluted with DCM, extracted with water, the organic phase dried over anhydrous Na2SO4 and concentrated. The residue was purified by flash chromatography (eluted successively with: EtOAc/hexanes 1:1, EtOAc, EtOAc/MeOH 4:1) affording 273 (336 mg, 0.67 mmol, 34% yield). MS (m/z): (M+1) 504.1 (100%).

Provenance & Evidence