Potassium Carbonate → 5-chloro-N-(2,4-dimethoxybenzyl)-2-fluoro-4-{2-pyridazin-4-yl-4-[6-(trifluoromethyl)pyridin-3-yl]phenoxy}-N-1,3,4-thiadiazol-2-ylbenzenesulfonamide

HRID 1619668Notes

Reaction equation

HRID 1619668 reaction equation
[N:1]1[CH:6]=[CH:5][C:4]([C:7]2[CH:12]=[C:11]([C:13]3[CH:14]=[N:15][C:16]([C:19]([F:22])([F:21])[F:20])=[CH:17][CH:18]=3)[CH:10]=[CH:9][C:8]=2[OH:23])=[CH:3][N:2]=1.C(=O)([O-])[O-].[K+].[K+].[Cl:30][C:31]1[C:32](F)=[CH:33][C:34]([F:57])=[C:35]([S:37]([N:40]([CH2:46][C:47]2[CH:52]=[CH:51][C:50]([O:53][CH3:54])=[CH:49][C:48]=2[O:55][CH3:56])[C:41]2[S:42][CH:43]=[N:44][N:45]=2)(=[O:39])=[O:38])[CH:36]=1>CS(C)=O>[Cl:30][C:31]1[C:32]([O:23][C:8]2[CH:9]=[CH:10][C:11]([C:13]3[CH:14]=[N:15][C:16]([C:19]([F:20])([F:21])[F:22])=[CH:17][CH:18]=3)=[CH:12][C:7]=2[C:4]2[CH:5]=[CH:6][N:1]=[N:2][CH:3]=2)=[CH:33][C:34]([F:57])=[C:35]([S:37]([N:40]([CH2:46][C:47]2[CH:52]=[CH:51][C:50]([O:53][CH3:54])=[CH:49][C:48]=2[O:55][CH3:56])[C:41]2[S:42][CH:43]=[N:44][N:45]=2)(=[O:38])=[O:39])[CH:36]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 580422535-chloro-N-(2,4-dimethoxybenzyl)-2,4-difluoro-N-(1,3,4-thiadiazol-2-yl)benzenesulfonamideHCID 136200884HCID 136200884, compound

Product 1

HCID 580423105-chloro-N-(2,4-dimethoxybenzyl)-2-fluoro-4-{2-pyridazin-4-yl-4-[6-(trifluoromethyl)pyridin-3-yl]phenoxy}-N-1,3,4-thiadiazol-2-ylbenzenesulfonamideYield 58.2%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

2-(Pyridazin-4-yl)-4-(6-(trifluoromethyl)pyridin-3-yl)phenol (Preparation 59, 360 mg, 1.134 mmol) was dissolved in DMSO (6 mL) and potassium carbonate (313 mg, 2.27 mmol) was added followed by 5-chloro-N-(2,4-dimethoxybenzyl)-2,4-difluoro-N-(1,3,4-thiadiazol-2-yl)benzenesulfonamide (Preparation 16, 524 mg, 1.134 mmol). The reaction was stirred at room temperature for 18 hours and then partitioned between ethyl acetate and water. The organic layer was separated, washed with brine, dried over anhydrous MgSO4, filtered and concentrated in vacuo. The residue was purified on silica gel by Biotage (20% to 100% EtOAc in heptane over 20 CV) to give the title compound (501 mg, 58%) as yellow foam.

Workup

  1. custompartitioned between ethyl acetate and water
  2. customThe organic layer was separated
  3. washwashed with brine
  4. dry with materialdried over anhydrous MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified on silica gel by Biotage (20% to 100% EtOAc in heptane over 20 CV)

Sources & evidence

ORD record
ord-d2f7121394b54870b87b9eb8984f48df
Source dataset
uspto-grants-2014_07
Patent number
US08772293B2

Reaction notes

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