Potassium Carbonate → 3-Cyano-N-(2,4-dimethoxybenzyl)-4-{[3-pyridazin-4-yl-3'-(trifluoromethyl)biphenyl-4-yl]oxy}-N-1,2,4-thiadiazol-5-ylbenzenesulfonamide

HRID 1619636Notes

Reaction equation

HRID 1619636 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([S:10]([N:13]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][C:21]=2[O:28][CH3:29])[C:14]2[S:18][N:17]=[CH:16][N:15]=2)(=[O:12])=[O:11])[CH:6]=[CH:7][C:8]=1F)#[N:2].[N:30]1[CH:35]=[CH:34][C:33]([C:36]2[CH:37]=[C:38]([C:43]3[CH:48]=[CH:47][CH:46]=[C:45]([C:49]([F:52])([F:51])[F:50])[CH:44]=3)[CH:39]=[CH:40][C:41]=2[OH:42])=[CH:32][N:31]=1.C(=O)([O-])[O-].[K+].[K+]>CS(C)=O>[C:1]([C:3]1[CH:4]=[C:5]([S:10]([N:13]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][C:21]=2[O:28][CH3:29])[C:14]2[S:18][N:17]=[CH:16][N:15]=2)(=[O:11])=[O:12])[CH:6]=[CH:7][C:8]=1[O:42][C:41]1[CH:40]=[CH:39][C:38]([C:43]2[CH:48]=[CH:47][CH:46]=[C:45]([C:49]([F:50])([F:51])[F:52])[CH:44]=2)=[CH:37][C:36]=1[C:33]1[CH:34]=[CH:35][N:30]=[N:31][CH:32]=1)#[N:2]

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 580422543-cyano-N-(2,4-dimethoxybenzyl)-4-fluoro-N-(1,2,4-thiadiazol-5-yl)benzenesulfonamideHCID 136200876HCID 136200876, compound

Product 1

HCID 580422893-Cyano-N-(2,4-dimethoxybenzyl)-4-{[3-pyridazin-4-yl-3'-(trifluoromethyl)biphenyl-4-yl]oxy}-N-1,2,4-thiadiazol-5-ylbenzenesulfonamideYield 111%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

To a solution of 3-cyano-N-(2,4-dimethoxybenzyl)-4-fluoro-N-1,2,4-thiadiazol-5-ylbenzenesulfonamide (Preparation 19, 206 mg, 0.474 mmol) and 3-pyridazin-4-yl-3′-(trifluoromethyl)biphenyl-4-ol (Preparation 3, 150 mg, 0.474 mmol) in dimethylsulfoxide (5 mL) was added potassium carbonate (196 mg, 1.42 mmol). The reaction mixture was stirred at room temperature for 18 hours. The reaction mixture was quenched with a 1M aqueous solution of sodium hydroxide whereupon a fine precipitate formed. The mixture was extracted with ethyl acetate. The organic layer was separated, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo to afford the title compound as an oil (380 mg, 111%, contains residual dimethylsulfoxide). The material was used without purification in the next step.

Workup

  1. customThe reaction mixture was quenched with a 1M aqueous solution of sodium hydroxide whereupon a fine precipitate
  2. customformed
  3. extractionThe mixture was extracted with ethyl acetate
  4. customThe organic layer was separated
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-d7903f5d6c194419b770ec16e8c1192b
Source dataset
uspto-grants-2014_07
Patent number
US08772293B2

Reaction notes

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