Dimethylformamide → HCID 67234905, compound

To a solution of 4-bromo-3-[(trifluoromethyl)oxy]phenol (257 mg, 1.0 mmol) in dry DMF (4 mL) potassium carbonate (276 mg, 2 mmol) and then 2-chloro-5-nitropyrimidine (319 mg, 2.0 mmol) were added and the reaction mixture was stirred for 2 hours at r.t. The reaction was quenched with water (1 mL), diluted with brine (5 mL) and extracted with ethyl acetate (2×15 mL). The organic layer was dried (Na2SO4), filtered and evaporated to give crude 2-({4-bromo-3-[(trifluoromethyl)oxy]phenyl}oxy)-5-nitropyrimidine. This crude was dissolved in THF/water (2:1) (6 mL) and Iron (279 mg, 5 mmol) and NH4Cl (267.5 mg, 5 mmol) were added and the reaction mixture was stirred overnight at r.t. The solid was filtered off and the solution was diluted with an aqueous saturated solution of NaHCO3 (5 mL) and extracted with ethyl acetate (2×20 mL). The organic layer was dried (Na2SO4), filtered and evaporated and the residue was purified by flash chromatography on silica gel (SNAP 25 g) eluting from 75:25 to 40:60 cyclohexane/ethyl acetate to afford the title compound (280 mg) as light yellow solid.

1. customThe reaction was quenched with water (1 mL)
2. additiondiluted with brine (5 mL)
3. extractionextracted with ethyl acetate (2×15 mL)
4. dry with materialThe organic layer was dried (Na2SO4)
5. filtrationfiltered
6. customevaporated

ORD record

ord-8c4172a0a4494271ba70a03774dcca98

Source dataset

uspto-grants-2015_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09216967B2