Pyridine → Ethyl 3-{[(2,6-difluorophenyl)sulfonyl]amino}-4-fluorobenzoate

HRID 239271Notes

Reaction equation

HRID 239271 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:10]=[CH:11][C:12]=1[F:13])[C:5]([O:7][CH2:8][CH3:9])=[O:6].N1C=CC=CC=1.[F:20][C:21]1[CH:26]=[CH:25][CH:24]=[C:23]([F:27])[C:22]=1[S:28](Cl)(=[O:30])=[O:29]>C(Cl)Cl>[F:20][C:21]1[CH:26]=[CH:25][CH:24]=[C:23]([F:27])[C:22]=1[S:28]([NH:1][C:2]1[CH:3]=[C:4]([CH:10]=[CH:11][C:12]=1[F:13])[C:5]([O:7][CH2:8][CH3:9])=[O:6])(=[O:30])=[O:29]

Participants

5

Reactant 3

HCID 1049PyridineHCID 27342712,6-Difluorobenzenesulfonyl chlorideHCID 18412404Ethyl 3-amino-4-fluorobenzoate

Product 1

HCID 57989990Ethyl 3-{[(2,6-difluorophenyl)sulfonyl]amino}-4-fluorobenzoateYield 73%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of ethyl 3-amino-4-fluorobenzoate (5.47 g, 30 mmol) and pyridine (2.55 mL, 33 mmol) in DCM (150 mL) was added 2,6-difluorobenzenesulfonyl chloride (4.45 mL, 33 mmol). The reaction was stirred overnight at rt. After 16 h, the reaction mixture was concentrated, triturated with ether, and dried in vacuo to generate 7.87 g (66% yield) of the product of Step A as a white powder. MS (ESI): 360 (M+H).

Workup

  1. waitAfter 16 h
  2. concentrationthe reaction mixture was concentrated
  3. customtriturated with ether
  4. customdried in vacuo

Sources & evidence

ORD record
ord-4fb2584c9a284e118392a56af9ce1915
Source dataset
uspto-grants-2014_02
Patent number
US08642759B2

Reaction notes

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