Pyridine → N-{3-[5-(2-Chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-4-fluorophenyl}-2,6-difluorobenzenesulfonamide

HRID 1961961Notes

Reaction equation

HRID 1961961 reaction equation
[Cl:1][C:2]1[N:7]=[C:6]([C:8]2[S:12][C:11]([C:13]([CH3:16])([CH3:15])[CH3:14])=[N:10][C:9]=2[C:17]2[CH:18]=[C:19]([CH:21]=[CH:22][C:23]=2[F:24])[NH2:20])[CH:5]=[CH:4][N:3]=1.N1C=CC=CC=1.[F:31][C:32]1[CH:37]=[CH:36][CH:35]=[C:34]([F:38])[C:33]=1[S:39](Cl)(=[O:41])=[O:40]>C(Cl)Cl>[Cl:1][C:2]1[N:7]=[C:6]([C:8]2[S:12][C:11]([C:13]([CH3:16])([CH3:15])[CH3:14])=[N:10][C:9]=2[C:17]2[CH:18]=[C:19]([NH:20][S:39]([C:33]3[C:34]([F:38])=[CH:35][CH:36]=[CH:37][C:32]=3[F:31])(=[O:41])=[O:40])[CH:21]=[CH:22][C:23]=2[F:24])[CH:5]=[CH:4][N:3]=1

Participants

5

Reactant 3

HCID 1049PyridineHCID 27342712,6-Difluorobenzenesulfonyl chlorideHCID 579898213-[5-(2-Chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-4-fluoroaniline

Product 1

HCID 57989954N-{3-[5-(2-Chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-4-fluorophenyl}-2,6-difluorobenzenesulfonamideYield 20.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

To a solution of 3-[5-(2-chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-4-fluoroaniline (7.4 g, 20.4 mmol) in DCM (200 mL) was added pyridine (4.85 g, 61.3 mmol) and cooled to 0° C. 2,6-Difluorobenzene-1-sulfonyl chloride (4.76 g, 22.5 mmol) in DCM (10 mL) was added dropwise to the mixture. The reaction was stirred at rt overnight. Then the reaction was washed with water (200 mL), and extracted with DCM (2×100 mL). The organic layer was washed with brine, dried over anhydrous Na2SO4, filtrated and concentrated under reduced pressure to give the crude product, which was purified by column chromatography on silica gel (petroleum ether:EtOAc 5:1) to afford the title compound of Step E (2.3 g, 7.2% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 8.56 (d, J=5.3 Hz, 1H), 7.62-7.75 (m, 1H), 7.20-7.32 (m, 5H), 6.92 (d, J=5.3 Hz, 1H), 1.40 (s, 9H). m/z (ES+): 539 [M+H]+.

Workup

  1. washThen the reaction was washed with water (200 mL)
  2. extractionextracted with DCM (2×100 mL)
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous Na2SO4
  5. filtrationfiltrated
  6. concentrationconcentrated under reduced pressure
  7. customto give the crude product, which
  8. customwas purified by column chromatography on silica gel (petroleum ether:EtOAc 5:1)

Sources & evidence

ORD record
ord-e39eb3edc30f4da2afdf8efce419b078
Source dataset
uspto-grants-2013_04
Patent number
US08415345B2

Reaction notes

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