N-bromobutanimide → HCID 57989858, compound

HRID 239472Notes

Reaction equation

HRID 239472 reaction equation
[Cl:1][C:2]1[N:7]=[C:6](/[CH:8]=[C:9](/[C:11]2[CH:12]=[C:13]([NH:17][S:18]([C:21]3[C:26]([F:27])=[CH:25][CH:24]=[CH:23][C:22]=3[F:28])(=[O:20])=[O:19])[CH:14]=[CH:15][CH:16]=2)\O)[CH:5]=[CH:4][N:3]=1.C1C(=O)N(Br)C(=O)C1.[CH3:37][N:38]([CH3:42])[C:39]([NH2:41])=[S:40]>CC(N(C)C)=O>[Cl:1][C:2]1[N:7]=[C:6]([C:8]2[S:40][C:39]([N:38]([CH3:42])[CH3:37])=[N:41][C:9]=2[C:11]2[CH:12]=[C:13]([NH:17][S:18]([C:21]3[C:26]([F:27])=[CH:25][CH:24]=[CH:23][C:22]=3[F:28])(=[O:20])=[O:19])[CH:14]=[CH:15][CH:16]=2)[CH:5]=[CH:4][N:3]=1

Participants

5

Reactant 3

HCID 67184N-bromobutanimideHCID 30341921,1-Dimethyl-2-thioureaHCID 136176025N-{3-[(Z)-2-(2-Chloro-4-pyrimidinyl)-1-hydroxyethenyl]phenyl}-2,6-difluorobenzenesulfonamide

Product 1

HCID 57989858HCID 57989858, compoundYield 25%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Procedure

To N-{3-[(Z)-2-(2-chloro-4-pyrimidinyl)-1-hydroxyethenyl]phenyl}-2,6-difluorobenzenesulfonamide (2.0 g, 4.72 mmol) in 25 mL DMA was added NBS (0.88 g, 4.95 mmol). The mixture stirred at rt for 30 min. N,N-Dimethylthiourea (0.6 g, 5.66 mmol) was added and the mixture heated to 40° C. overnight. The mixture was poured into 300 mL ice water and the crude product was collected by filtration. The crude product was then purified by flash chromatography to give the title compound of Step A (0.6 g, 1.18 mmol, 25% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 11.09 (s, 1H), 8.14 (d, J=5.5 Hz, 1H), 7.68 (s, 2H), 7.37 (d, J=7.9 Hz, 1H), 7.22 (ddd, J=17.3, 8.5, 8.2 Hz, 5H), 6.47 (d, J=5.5 Hz, 1H), 3.12 (s, 6H).

Workup

  1. temperaturethe mixture heated to 40° C. overnight
  2. filtrationthe crude product was collected by filtration
  3. customThe crude product was then purified by flash chromatography

Sources & evidence

ORD record
ord-47a3ef77645548ad9dca5887121e4939
Source dataset
uspto-grants-2014_02
Patent number
US08642759B2

Reaction notes

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