3-Buten-2-ol → HCID 15264427, compound
Reaction equation
[C:1](#[N:9])[C:2]1[C:3](=[CH:5][CH:6]=[CH:7][CH:8]=1)[OH:4].[CH3:10][CH:11](O)[CH:12]=[CH2:13].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>O1CCCC1>[CH3:13][CH:12]([O:4][C:3]1[CH:5]=[CH:6][CH:7]=[CH:8][C:2]=1[C:1]#[N:9])[CH:11]=[CH2:10]Participants
Procedure
To a mixture of salicylonitrile (2.0 g, 16.8 mmol) and but-3-en-2-ol (1.5 ml, 16.8 mmol) in tetrahydrofuran (100 ml) was added triphenylphosphine (4.4 g, 16.8 mmol), followed by diisopropyl azodicarboxylate (3.3 ml, 16.8 mmol) in tetrahydrofuran (15 ml), added dropwise ensuring the reaction temperature did not rise above 20° C. The reaction mixture was stirred at room temperature for 18 h and then concentrated in vacuo. To the residue was added diethyl ether (20 ml) and the solution was washed with aqueous sodium hydroxide solution (1N), dried (MgSO4) and concentrated in vacuo. The residue was purified by flash chromatography (silica) with gradient elution, diethyl ether:cyclohexane [1:9 to 1:1]. The appropriate fractions were combined and concentrated to give the title compound (1.9 g).
Workup
- additionadded dropwise
- customdid not rise above 20° C
- concentrationconcentrated in vacuo
- additionTo the residue was added diethyl ether (20 ml)
- washthe solution was washed with aqueous sodium hydroxide solution (1N)
- dry with materialdried (MgSO4)
- concentrationconcentrated in vacuo
- customThe residue was purified by flash chromatography (silica) with gradient elution, diethyl ether
- concentrationconcentrated
Sources & evidence
- ORD record
- ord-9d8431cc9c1844ea9668dc2d6904bd93
- Source dataset
- uspto-grants-2009_11
- Patent number
- US07622500B2
Reaction notes
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