Cesium carbonate → 3-[2,5-Difluoro-4-(methylsulfonyl)phenoxy]-5-[(1S)-2-hydroxy-1-methylethoxy]-N-(1-methyl-1H-pyrazol-3-yl)benzamide

HRID 20553

Reaction equation

C(=O)([O-])[O-].[Cs+].[Cs+].[OH:7][C:8]1[CH:9]=[C:10]([CH:20]=[C:21]([O:23][C@@H:24]([CH3:27])[CH2:25][OH:26])[CH:22]=1)[C:11]([NH:13][C:14]1[CH:18]=[CH:17][N:16]([CH3:19])[N:15]=1)=[O:12].[F:28][C:29]1[CH:34]=[C:33]([S:35]([CH3:38])(=[O:37])=[O:36])[C:32]([F:39])=[CH:31][C:30]=1F>C(#N)C>[F:28][C:29]1[CH:34]=[C:33]([S:35]([CH3:38])(=[O:37])=[O:36])[C:32]([F:39])=[CH:31][C:30]=1[O:7][C:8]1[CH:9]=[C:10]([CH:20]=[C:21]([O:23][C@@H:24]([CH3:27])[CH2:25][OH:26])[CH:22]=1)[C:11]([NH:13][C:14]1[CH:18]=[CH:17][N:16]([CH3:19])[N:15]=1)=[O:12]

Participants

Conditions

Temperature: 160 °C

Procedure

Caesium carbonate (523 mg) was added to a solution of 3-hydroxy-5-{[(1S)-2-hydroxy-1-methylethyl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)benzamide (234 mg) and 1,2,4-trifluoro-5-(methylsulfonyl)benzene (169 mg) in acetonitrile (5 mL) was added. The mixture was heated in a sealed microwave vial to 160° C. for 7000 seconds and left to cool before being filtered and washed with acetonitrile (10 mL). The filtrate was evaporated in vacuo and chromatographed on silica, eluting with 0 to 10% methanol in ethyl acetate. This gave incomplete resolution so the mixture was purified by preparatory HPLC using a gradient of 5 to 95% acetonitrile in water to afford the desired compound (5.1 mg)

Workup

additionwas added
waitleft
temperatureto cool
filtrationbefore being filtered
washwashed with acetonitrile (10 mL)
customThe filtrate was evaporated in vacuo
customchromatographed on silica
washeluting with 0 to 10% methanol in ethyl acetate
customThis gave incomplete resolution so the mixture was purified by preparatory HPLC

Sources & evidence

ORD record: ord-f5db6578902c40369809c04aab9c4f72
Source dataset: uspto-grants-2010_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07745475B2

Linked notes

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