Hydrogen Bromide → HCID 70111644, compound

HRID 377291Notes

Reaction equation

HRID 377291 reaction equation
[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][CH:10]=[C:11]([C:15]4[CH:16]=[C:17]5[C:21](=[C:22]([F:24])[CH:23]=4)[CH2:20][N:19](S(C4C=CC(C)=CC=4)(=O)=O)[CH2:18]5)[C:12]=3[CH3:14])[C:7](=[O:35])[C:6]([C:36]([OH:38])=[O:37])=[CH:5]2)[CH2:3][CH2:2]1.C1(O)C=CC=CC=1.C(O)(=O)CC.[BrH:51]>>[BrH:51].[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][CH:10]=[C:11]([C:15]4[CH:16]=[C:17]5[C:21](=[C:22]([F:24])[CH:23]=4)[CH2:20][NH:19][CH2:18]5)[C:12]=3[CH3:14])[C:7](=[O:35])[C:6]([C:36]([OH:38])=[O:37])=[CH:5]2)[CH2:2][CH2:3]1

Participants

5

Reactant 4

HCID 260Hydrogen BromideHCID 996PhenolHCID 1032Propionic AcidHCID 15458202HCID 15458202, compound

Product 1

HCID 70111644HCID 70111644, compound

Procedure

In 3.0 ml of 47% hydrobromic acid was suspended 0.30 g of 1-cyclopropyl-7-[7-fluoro-2-(p-toluenesulfonyl)isoindolin-5-yl]-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, followed by adding thereto 0.16 g of phenol and 1.8 ml of propionic acid, and the resulting mixture was heated at 100° C. for 10 hours under a nitrogen atmosphere. The reaction mixture was concentrated under reduced pressure, after which ethanol was added to the resulting residue and the crystals were collected by filtration to obtain 0.21 g of colorless 1-cyclopropyl-7-(7-fluoroisoindolin-5-yl)-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid hydrobromide. The hydrobromide obtained was suspended in 1.3 ml of ethanol and dissolved in 2.6 ml of a 0.5 N aqueous sodium hydroxide solution, after which carbon dioxide was bubbled into the resulting solution and the crystals were collected by filtration to obtain 0.10 g of colorless 1-cyclopropyl-7-(7-fluoroisoindolin-5-yl)-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid.

Workup

  1. additionby adding
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. additionafter which ethanol was added to the resulting residue
  4. filtrationthe crystals were collected by filtration

Sources & evidence

ORD record
ord-d782b4b7ecdf4c078e9ab84a048ab870
Source dataset
uspto-grants-2000_02
Patent number
US06025370

Reaction notes

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