n-(2-hydroxyphenyl)formamide → N-{2-[(2-Bromophenoxy)methoxy]phenyl}formamide

N-(2-Hydroxyphenyl)formamide (16.0 g, 130 mnol) was dissolved in 99.9% ethanol (65 ml). Sodium methoxide 7.0 g, 130 mmol) was suspended in 99.9% ethanol (70 mnl) and added dropwise over 30 minutes. The resulting mixture was stirred for 30 minutes. 1-Bromo-2-chloromethoxybenzene (26.1 g, 118 mmol, synthesis described in J. Heterocycl. Chem., 11, 1974, 331-337) was added dropwise over 15 minutes. The reaction mixture was stirred for 2.5 h at room temperature, heated at reflux temperature for 2 h, and stirred at room temperature overnight. The mixture was filtered and evaporated. The residue was dissolved in toluene (500 ml) and washed with a saturated sodium carbonate solution (2×200 ml). The organic phase was dried (MgSO4) and evaporated. The residue was suspended in ethanol (40 ml), filtered and washed with ethanol (3×10 ml). After drying, this afforded the product, N-(2-(2-bromophenoxymethoxy)phenyl)formamide (14.1 g, 37%).

1. additionadded dropwise over 30 minutes
2. stirringThe reaction mixture was stirred for 2.5 h at room temperature
3. temperatureheated
4. temperatureat reflux temperature for 2 h
5. stirringstirred at room temperature overnight
6. filtrationThe mixture was filtered
7. customevaporated
8. dissolutionThe residue was dissolved in toluene (500 ml)
9. washwashed with a saturated sodium carbonate solution (2×200 ml)
10. dry with materialThe organic phase was dried (MgSO4)
11. customevaporated
12. filtrationfiltered
13. washwashed with ethanol (3×10 ml)
14. customAfter drying

ORD record

ord-600e29eefbcb4fb8abd2fd2d019c3b18

Source dataset

uspto-grants-2000_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06017915