Sodium borohydride → 4-(3-Nitropyridin-4-yl)cyclohex-3-enol
Reaction equation
[N+:1]([C:4]1[CH:5]=[N:6][CH:7]=[CH:8][C:9]=1[C:10]1[CH2:15][CH2:14][C:13](=[O:16])[CH2:12][CH:11]=1)([O-:3])=[O:2].[BH4-].[Na+]>CO>[N+:1]([C:4]1[CH:5]=[N:6][CH:7]=[CH:8][C:9]=1[C:10]1[CH2:15][CH2:14][CH:13]([OH:16])[CH2:12][CH:11]=1)([O-:3])=[O:2]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 0 °C
Procedure
To a solution of 4-(3-nitropyridin-4-yl)cyclohex-3-enone (1.0 eq) in methanol (0.2 M) was added sodium borohydride (1.8 equiv.) at 0° C. The reaction mixture was stirred at 0° C. for 2 hr. Methanol was removed under reduced pressure. The residue was dissolved with ethyl acetate (200 mL), and washed with sat NaCl (30 mL). The organic was dried with MgSO4, filtered and concentrated to give 4-(3-nitropyridin-4-yl)cyclohex-3-enol (85%). The crude product was used in the next step without further purification. LC/MS (m/z): MH+=221.0, Rt=0.55
Workup
- customMethanol was removed under reduced pressure
- dissolutionThe residue was dissolved with ethyl acetate (200 mL)
- washwashed
- dry with materialThe organic was dried with MgSO4
- filtrationfiltered
- concentrationconcentrated
Sources & evidence
- ORD record
- ord-deb47780ea0a4884a60d8cd5bdd9b0e8
- Source dataset
- uspto-grants-2012_12
- Patent number
- US08329732B2
Reaction notes
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