Potassium Carbonate → 5-Chloro-4-(5-chloro-6-(3,3-difluoroazetidin-1-yl)pyridin-3-yloxy)-2-fluoro-N-(methylsulfonyl)benzamide

HRID 2048025Notes

Reaction equation

Cl.[F:2][C:3]1([F:7])[CH2:6][NH:5][CH2:4]1.[Cl:8][C:9]1[C:10]([O:23][C:24]2[CH:25]=[N:26][C:27](F)=[C:28]([Cl:30])[CH:29]=2)=[CH:11][C:12]([F:22])=[C:13]([CH:21]=1)[C:14]([NH:16][S:17]([CH3:20])(=[O:19])=[O:18])=[O:15].C(=O)([O-])[O-].[K+].[K+]>CS(C)=O.O>[Cl:8][C:9]1[C:10]([O:23][C:24]2[CH:25]=[N:26][C:27]([N:5]3[CH2:6][C:3]([F:7])([F:2])[CH2:4]3)=[C:28]([Cl:30])[CH:29]=2)=[CH:11][C:12]([F:22])=[C:13]([CH:21]=1)[C:14]([NH:16][S:17]([CH3:20])(=[O:18])=[O:19])=[O:15]

Participants

Conditions

Temperature: 90 °C

Procedure

3,3-Difluoroazetidine hydrochloride (98 mg, 0.76 mmol) was added to a suspension of 5-chloro-4-(5-chloro-6-fluoropyridin-3-yloxy)-2-fluoro-N-(methylsulfonyl)benzamide (Example 19, 150 mg, 0.38 mmol) and potassium carbonate (74 mg, 0.53 mmol) in dimethylsulfoxide (1 mL). The reaction mixture was stirred at 90° C. in the microwave for 15 hours. The reaction mixture was diluted with water (10 mL) and extracted with ethyl acetate (3×10 mL). The combined organic layers were dried (MgSO4), filtered and concentrated in vacuo. The crude compound was purified by reverse phase preparative HPLC eluting with acetonitrile:water (from 5:95 to 95:5) to give the title compound as a colourless solid (44 mg, 25%).

Workup

extractionextracted with ethyl acetate (3×10 mL)
dry with materialThe combined organic layers were dried (MgSO4)
filtrationfiltered
concentrationconcentrated in vacuo
customThe crude compound was purified by reverse phase preparative HPLC
washeluting with acetonitrile

Sources & evidence

ORD record: ord-153c05bd946446469fa10c2e50398876
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08592629B2

Reaction notes

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