Hydrogen Peroxide → HCID 72218242, compound

Hydrogen peroxide (30% aqueous, 2.019 mL, 19.77 mmol) was added dropwise to a stirred mixture of 2-amino-5-bromopyridine (1.71 g, 9.88 mmol), ferrocene (0.184 g, 0.988 mmol), and ethyl bromodifluoroacetate (3.82 mL, 29.7 mmol) in DMSO (50 mL) under an argon atmosphere. The reaction mixture was stirred at room temperature for 23 h. sulfuric acid (1.054 mL, 19.77 mmol) was added, and the reaction mixture was stirred at room temperature for 72 h. The reaction mixture was diluted with water and extracted with EtOAc. The organic layer was separated, washed with saturated aqueous sodium chloride, dried over magnesium sulfate, filtered, and concentrated in vacuo. The resulting crude product was purified by silica gel column chromatography eluting with EtOAc in hexanes to yield the title compound (1.19 g, 4.78 mmol, 48.4% yield) as a light purple solid. M+1: 248.9.

1. additionwas added
2. extractionextracted with EtOAc
3. customThe organic layer was separated
4. washwashed with saturated aqueous sodium chloride
5. dry with materialdried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe resulting crude product was purified by silica gel column chromatography
9. washeluting with EtOAc in hexanes

ORD record

ord-60135c422a8443ab8c211d7e0c1a9ea9

Source dataset

uspto-grants-2015_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09174992B2