4-Nitrophenol → Tert-butyl 2-(4-nitrophenoxy)acetate

Temperature

70 °C

Into a 100-mL round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed 4-nitrophenol (1 g, 7.12 mmol, 1.00 equip, 99%), tert-butyl 2-bromoacetate (1.68 g, 8.53 mmol, 1.00 equip), potassium carbonate (1.49 g, 10.60 mmol, 1.50 equip, 99%), and tetrahydrofuran (50 mL). The resulting solution was stirred for 4 h at 70° C. in an oil bath. The resulting solution was diluted with water (150 mL). The resulting solution was extracted with ethyl acetate (3×100 mL) and the organic layers combined. The resulting mixture was washed with water (1×100 mL) and brine (1×100 mL). The resulting mixture was dried over anhydrous sodium sulfate. The solids were filtered out. The filtrate was concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:20) to yield tert-butyl 2-(4-nitrophenoxy)acetate as a yellow solid.

1. customInto a 100-mL round-bottom flask purged
2. temperaturemaintained with an inert atmosphere of nitrogen
3. extractionThe resulting solution was extracted with ethyl acetate (3×100 mL)
4. washThe resulting mixture was washed with water (1×100 mL) and brine (1×100 mL)
5. dry with materialThe resulting mixture was dried over anhydrous sodium sulfate
6. filtrationThe solids were filtered out
7. concentrationThe filtrate was concentrated under vacuum

ORD record

ord-8db6fcc7ed1241bd93a17fb5945370f1

Source dataset

uspto-grants-2016_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09266835B2