6-amino-1,3-benzoxazol-2(3H)-one → HCID 10273343, compound
Reaction equation
[Cl:1][C:2]1[CH:19]=[CH:18][C:5]([O:6][CH:7]2[CH2:12][CH2:11][N:10]([C:13](=[O:17])[C:14]([OH:16])=O)[CH2:9][CH2:8]2)=[CH:4][CH:3]=1.[NH2:20][C:21]1[CH:30]=[CH:29][C:24]2[NH:25][C:26](=[O:28])[O:27][C:23]=2[CH:22]=1>>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:6][CH:7]2[CH2:8][CH2:9][N:10]([C:13](=[O:17])[C:14]([NH:20][C:21]3[CH:30]=[CH:29][C:24]4[NH:25][C:26](=[O:28])[O:27][C:23]=4[CH:22]=3)=[O:16])[CH2:11][CH2:12]2)=[CH:18][CH:19]=1Participants
3
Procedure
The title compound is prepared from [4-(4-chloro-phenoxy)-piperidin-1-yl]-oxo-acetic acid (Example 29d) and 6-amino-3H-benzoxazol-2-one according to the method described in Example 2. The filtered crystals are purified by column chromatography using Kieselgel 60 (Merck) as adsorbent and toluene:methanol=4:1 as eluent. Melting Point: 242-244° C. (isopropanol)
Workup
- customThe filtered crystals are purified by column chromatography
Sources & evidence
- ORD record
- ord-eb92c84e40284eea83088864e5cc1519
- Source dataset
- uspto-grants-2008_10
- Patent number
- US07435744B2
Reaction notes
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