Pyridine → HCID 66879858, compound

HRID 1913730Notes

Reaction equation

[NH2:1][C:2]1[CH:10]=[C:9]2[C:5]([C:6]([F:14])([F:13])[O:7][C:8]2([F:12])[F:11])=[CH:4][C:3]=1[OH:15].[F:16][C:17]1[CH:25]=[N:24][CH:23]=[CH:22][C:18]=1[C:19](O)=[O:20].CCN=C=NCCCN(C)C.N1C=CC=CC=1>O>[F:16][C:17]1[CH:25]=[N:24][CH:23]=[CH:22][C:18]=1[C:19]([NH:1][C:2]1[CH:10]=[C:9]2[C:5](=[CH:4][C:3]=1[OH:15])[C:6]([F:14])([F:13])[O:7][C:8]2([F:11])[F:12])=[O:20]

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 1.5 g of 6-amino-1,1,3,3-tetrafluoro-5-hydroxy-1,3-dihydroisobenzofuran, 0.95 g of 3-fluoroisonicotinic acid, 1.68 g of WSC and 13 ml of pyridine was stirred while heating at 80° C. for two hours. The reaction mixture was cooled to room temperature, and then water was added, followed by extraction with ethyl acetate three times. The combined organic layers were washed with water and a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 1.46 g of 3-fluoro-N-(1,1,3,3-tetrafluoro-6-hydroxy-1,3-dihydroisobenzofuran-5-yl)isonicotinamide.

Workup

temperatureThe reaction mixture was cooled to room temperature
extractionfollowed by extraction with ethyl acetate three times
washThe combined organic layers were washed with water
dry with materiala saturated sodium chloride solution, dried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-e0bd6cd7701d47ddab592f6c3d5b6f88
Source dataset: uspto-grants-2013_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08609705B2

Reaction notes

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