Reaction equation
[NH2:1][NH2:2].[O:3]=[C:4]1[C:8]([CH2:9][C:10]([OH:12])=[O:11])=[CH:7][C:6](=O)[O:5]1>C(O)(=O)C>[OH:5][C:6]1[CH:7]=[C:8]([CH2:9][C:10]([OH:12])=[O:11])[C:4](=[O:3])[NH:1][N:2]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 80 °C
Procedure
A solution of hydrazine (103 mg, 3.21 mmol) in acetic acid (16 mL) was added to (2,5-dioxo-2,5-dihydro-furan-3-yl)acetic acid (500 mg, 3.04 mmol) under cooling with ice, and the mixture was heated with stirring at an external temperature of 76 to 84° C. for one hour. The reaction mixture was concentrated under reduced pressure. The resulting solid was sequentially washed with water, ethanol and ether to give the title compound (414 mg, 80%).
Workup
- temperatureunder cooling with ice
- temperaturethe mixture was heated
- concentrationThe reaction mixture was concentrated under reduced pressure
- washThe resulting solid was sequentially washed with water, ethanol and ether
Sources & evidence
- ORD record
- ord-cff7547648714211adb0e715f20ea4c8
- Source dataset
- uspto-grants-2011_05
- Patent number
- US07935688B2
Linked notes
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