1,8-Diazabicyclo(5.4.0)undec-7-ene → 7-(2,5-Diazabicyclo[2.2.2]oct-2-yl)-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid

HRID 1589564

Reaction equation

HRID 1589564 reaction equation
[CH2:1]([N:3]1[C:12]2[C:7](=[CH:8][C:9]([F:14])=[C:10](F)[CH:11]=2)[C:6](=[O:15])[C:5]([C:16]([OH:18])=[O:17])=[CH:4]1)[CH3:2].Cl.Cl.[CH:21]12[CH2:28][CH2:27][CH:24]([NH:25][CH2:26]1)[CH2:23][NH:22]2.N12CCCN=C1CCCCC2>C(#N)C>[CH:21]12[CH2:28][CH2:27][CH:24]([NH:25][CH2:26]1)[CH2:23][N:22]2[C:10]1[CH:11]=[C:12]2[C:7]([C:6](=[O:15])[C:5]([C:16]([OH:18])=[O:17])=[CH:4][N:3]2[CH2:1][CH3:2])=[CH:8][C:9]=1[F:14]

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 8005211-Ethyl-6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acidHCID 229243902,5-Diazabicyclo(2.2.2)octane dihydrochloride

Product 1

HCID 135657957-(2,5-Diazabicyclo[2.2.2]oct-2-yl)-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acidYield 43.4%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A solution of 0.52 g (2.0 mmole) of 1-ethyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 0.37 g (2.0 mmole) of 2,5-diazabicyclo(2.2.2)octane dihydrochloride [P. A. Sturm et al., J. Med. Chem., 17, 481 (1974)], 0.90 ml (6.0 mmole) of 1,8-diazabicyclo[5.4.0]undec-7-ene and 25 ml of acetonitrile was heated under reflux for 21 hours. The reaction mixture was filtered and the filtrate was evaporated to dryness. The residue was recrystallized from ethanol to give 0.30 g of the title compound, mp 270°-272°.

Workup

  1. temperatureunder reflux for 21 hours
  2. filtrationThe reaction mixture was filtered
  3. customthe filtrate was evaporated to dryness
  4. customThe residue was recrystallized from ethanol

Sources & evidence

ORD record
ord-9cd97c866e664a92aa9f435b7db69aaf
Source dataset
uspto-grants-1986_02
Patent number
US04571396

Linked notes

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