Reaction equation
Cl[CH2:2][CH2:3][CH2:4][CH2:5][S:6][C:7]1[N:12]2[CH:13]=[CH:14][N:15]=[C:11]2[CH:10]=[CH:9][CH:8]=1.[NH:16]1[CH2:22][C:20](=[O:21])[NH:19][C:17]1=[O:18].C1CCN2C(=NCCC2)CC1.O>CN(C)C=O>[N:15]1[CH:14]=[CH:13][N:12]2[C:7]([S:6][CH2:5][CH2:4][CH2:3][CH2:2][N:19]3[C:20](=[O:21])[CH2:22][NH:16][C:17]3=[O:18])=[CH:8][CH:9]=[CH:10][C:11]=12Participants
6
Conditions
- Temperature
- 80 °C
Procedure
To a solution of 2.41 g (10.0 mmol) of 5-(4-chlorobutylthio)imidazo[1,2-a]pyridine and 1.00 g (10.0 mmol) of hydantoin in 30 ml of N,N-dimethylformamide, 1.50 ml (10.0 mmol) of 1,8-diazabicyclo[5.4.0]-7-undecene was added, followed by stirring at 80° C. for 16 hours. After the reaction mixture was cooled, water was added; the mixture was extracted with ethyl acetate and dried, after which the solvent was distilled off. The residue was purified by column chromatography (eluent, chloroform/methanol=20/1→10/1) to yield 1.27 g (41.7%, yellow solid) of the desired product.
Workup
- temperatureAfter the reaction mixture was cooled
- extractionthe mixture was extracted with ethyl acetate
- customdried
- distillationafter which the solvent was distilled off
- customThe residue was purified by column chromatography (eluent, chloroform/methanol=20/1→10/1)
Sources & evidence
- ORD record
- ord-356bb265275d412ca0d7a303c808ed76
- Source dataset
- uspto-grants-1998_11
- Patent number
- US05840732
Linked notes
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