Pyridine → HCID 66879864, compound

HRID 884966Notes

Reaction equation

HRID 884966 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].[Cl: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>[Cl: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

6

Reactant 4

HCID 1049PyridineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 27358163-Chloropyridine-4-carboxylic acidHCID 58148233HCID 58148233, compound

Product 1

HCID 66879864HCID 66879864, compoundYield 61.5%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of 0.68 g of 6-amino-1,1,3,3-tetrafluoro-5-hydroxy-1,3-dihydroisobenzofuran, 0.48 g of 3-chloroisonicotinic acid, 0.76 g of WSC and 7 ml of pyridine was stirred while heating at 80° C. for three 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, then dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.68 g of 3-chloro-N-(1,1,3,3-tetrafluoro-6-hydroxy-1,3-dihydroisobenzofuran-5-yl)isonicotinamide.

Workup

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

Sources & evidence

ORD record
ord-c81ce1bcf1cd4e499e2e01977f5e0d8b
Source dataset
uspto-grants-2012_08
Patent number
US08242133B2

Reaction notes

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