Benzyl Alcohol → 5-Benzyloxy-2-bromoisonicotinic acid ethyl ester
Reaction equation
[CH2:1]([OH:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].[CH2:11]([O:13][C:14](=[O:23])[C:15]1[C:20](F)=[CH:19][N:18]=[C:17]([Br:22])[CH:16]=1)[CH3:12].O>O1CCCC1>[CH2:11]([O:13][C:14](=[O:23])[C:15]1[C:20]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[CH:19][N:18]=[C:17]([Br:22])[CH:16]=1)[CH3:12]Participants
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Procedure
To a solution of benzylalcohol (1.5 g) in tetrahydrofuran (30 mL) was added sodium hydride (55%, 0.3 g) under ice cooling, and this mixture was stirred at same temperature for 5 minutes. To this reaction mixture was added a solution of 2-bromo-5-fluoroisonicotinic acid ethyl ester (2.9 g) in tetrahydrofuran (30 mL), and this mixture was stirred at room temperature for 2 hours. This reaction mixture was poured into water, and this mixture was extracted with ethyl acetate. This organic layer was washed with water and brine, dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: ethyl acetate/n-hexane) to give the title compound (2.4 g).
Workup
- stirringthis mixture was stirred at room temperature for 2 hours
- extractionthis mixture was extracted with ethyl acetate
- washThis organic layer was washed with water and brine
- dry with materialdried over anhydrous magnesium sulfate
- customThe solvent was removed under reduced pressure
- customThe residue was purified by column chromatography on silica gel (eluent: ethyl acetate/n-hexane)
Sources & evidence
- ORD record
- ord-bf0d40ada5fa4aa89b056549407ce9fc
- Source dataset
- uspto-grants-2015_05
- Patent number
- US09023882B2
Reaction notes
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