Reaction equation
[NH2:1][C:2]1[NH:3][C:4](=O)[C:5]2[C:10]3[CH2:11][CH2:12][CH2:13][CH2:14][C:9]=3[S:8][C:6]=2[N:7]=1.O=P(Cl)(Cl)[Cl:18].C(Cl)(Cl)Cl>C(OC(=O)C)(=O)C>[Cl:18][C:4]1[C:5]2[C:10]3[CH2:11][CH2:12][CH2:13][CH2:14][C:9]=3[S:8][C:6]=2[N:7]=[C:2]([NH2:1])[N:3]=1Participants
5
Procedure
To a 50 mL flask was added 10 (221 mg, 1 mmol) and 10 mL POCl3. The resulting mixture was refluxed for 2 h, and the solvent was removed under reduced pressure to afford a dark residue. To this was added 30 mL of CHCl3 and 300 mg of silica gel. The solvent was evaporated to afford a plug, Column chromatography of the plug with hexane:acetyl acetate=20:1 as eluent afford 105 mg (44%) of 11 as a yellow solid.
Workup
- temperatureThe resulting mixture was refluxed for 2 h
- customthe solvent was removed under reduced pressure
- customto afford a dark residue
- customThe solvent was evaporated
- customto afford a plug, Column chromatography of the plug with hexane
Sources & evidence
- ORD record
- ord-957977edaa6f4bc0b7194295274712d9
- Source dataset
- uspto-grants-2011_07
- Patent number
- US07982035B2
Linked notes
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