4-Acetylbenzoic Acid → 4-[3E-(2,4-Dimethoxy-5-thiazol-2-yl-phenyl)-acryloyl]-benzoic acid
Reaction equation
[CH3:1][O:2][C:3]1[CH:10]=[C:9]([O:11][CH3:12])[C:8]([C:13]2[S:14][CH:15]=[CH:16][N:17]=2)=[CH:7][C:4]=1[CH:5]=O.[C:18]([C:21]1[CH:29]=[CH:28][C:24]([C:25]([OH:27])=[O:26])=[CH:23][CH:22]=1)(=[O:20])[CH3:19]>>[CH3:1][O:2][C:3]1[CH:10]=[C:9]([O:11][CH3:12])[C:8]([C:13]2[S:14][CH:15]=[CH:16][N:17]=2)=[CH:7][C:4]=1/[CH:5]=[CH:19]/[C:18]([C:21]1[CH:29]=[CH:28][C:24]([C:25]([OH:27])=[O:26])=[CH:23][CH:22]=1)=[O:20]Participants
3
Procedure
The title compound was prepared by condensing 2,4-dimethoxy-5-thiazol-2-yl-benzaldehyde (Ex-55A) and 4-acetylbenzoic acid in a similar manner as described in Ex-3. Yellow solid, mp>260° C., 65% yield. 1H-NMR (DMSO-d6) δ 13.33 (bs, 1H), 8.74 (s, 1H), 8.22 (d, J=8 Hz, 2H), 8.04–8.12 (m, 3H), 7.95 (d, J=2 Hz, 1H), 7.82 (d, J=16 Hz, 1H), 7.76 (d, J=3 Hz, 1), 6.94 (s, 1H), 4.14 (s, 3H), 4.05 (s, 1H). HRMS m/z=calc. 396.0906, found 396.0903.
Sources & evidence
- ORD record
- ord-e2715e8373664ae8829364fb63a82860
- Source dataset
- uspto-grants-2006_08
- Patent number
- US07094801B2
Reaction notes
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