2-Bromothiazole → HCID 11777777, compound
Reaction equation
Br[C:2]1[S:3][CH:4]=[CH:5][N:6]=1.[Br:7][C:8]1[CH:19]=[CH:18][C:11]([C:12](N(OC)C)=[O:13])=[CH:10][CH:9]=1>>[Br:7][C:8]1[CH:19]=[CH:18][C:11]([C:12]([C:2]2[S:3][CH:4]=[CH:5][N:6]=2)=[O:13])=[CH:10][CH:9]=1Participants
3
Procedure
The title compound was prepared from 2-bromothiazole and 4-bromo-N-methoxy-N-methylbenzamide following the general method of Method 1. The crude product was purified by column chromatography on silica gel using petroleum ether/ethyl acetate, 7:3, as the eluent affording 0.52 g (98% yield) of the title compound as a yellow crystals: mp 74-75° C.; 1H NMR (400 MHz, CDCl3) δ 8.32 (m, 2 H), 8.02 (d, J=3.0 Hz, 1 H), 7.67 (d, J=3.0 Hz, 1 H), 7.60 (m, 2 H); 13C NMR (100.5 MHz, CDCl3) δ 183.4, 167.9, 145.3, 134.2, 133.0, 132.2, 129.6, 127.0; MS (TSP) m/z 268, 279 (M+1)
Workup
- customThe crude product was purified by column chromatography on silica gel
Sources & evidence
- ORD record
- ord-f9505f29cbc24e5ab2588dc7e098158b
- Source dataset
- uspto-grants-2008_03
- Patent number
- US07345050B2
Reaction notes
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