Water → (E)-ethyl 3-(4-(4-(N-(2-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)ethyl)sulfamoyl)phenoxy)-3,5-difluorophenyl)-2-methylacrylate

To a solution of (E)-ethyl 3-(4-(4-(chlorosulfonyl)phenoxy)-3,5-difluorophenyl)-2-methylacrylate (intermediate 41.3) (250 mg, 0.60 mmol) in DCM (3 mL) was added a solution of 2-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)ethanamine (157 mg, 0.72 mmol) and triethylamine (72 mg, 0.72 mmol) in DCM (2 mL). After 15 minutes, water (10 mL) was added and the reaction mixture was extracted with DCM (2×25 mL). The combined orgaic layers were washed with water (10 mL), brine (10 mL), dried (Na2SO4) and concentrated. The crude material was purified by flash chromatography on silica gel eluting with 50% EtOAc in DCM to give the title compound (169 mg).

1. extractionthe reaction mixture was extracted with DCM (2×25 mL)
2. washThe combined orgaic layers were washed with water (10 mL), brine (10 mL)
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated
5. customThe crude material was purified by flash chromatography on silica gel eluting with 50% EtOAc in DCM

ORD-Eintrag

ord-199563e105234712aa9009e8a9abcee2

Quelldatensatz

uspto-grants-2013_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08541448B2