1,8-Diazabicyclo(5.4.0)undec-7-ene → 3-Quinolinecarboxylic acid, 1,4-dihydro-1-cyclopropyl-6,8-difluoro-7-(2-((methylamino)methyl)-4-morpholinyl)-4-oxo-

HRID 477838Notes

Reaction equation

HRID 477838 reaction equation
[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:16])=[C:11](F)[C:12]=3[F:14])[C:7](=[O:17])[C:6]([C:18]([OH:20])=[O:19])=[CH:5]2)[CH2:3][CH2:2]1.Cl.Cl.[CH3:23][NH:24][CH2:25][CH:26]1[O:31][CH2:30][CH2:29][NH:28][CH2:27]1.N12CCCN=C1CCCCC2>C(#N)C>[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:16])=[C:11]([N:28]4[CH2:29][CH2:30][O:31][CH:26]([CH2:25][NH:24][CH3:23])[CH2:27]4)[C:12]=3[F:14])[C:7](=[O:17])[C:6]([C:18]([OH:20])=[O:19])=[CH:5]2)[CH2:2][CH2:3]1

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 5354141-Cyclopropyl-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acidHCID 14652584HCID 14652584, compound

Product 1

HCID 30788323-Quinolinecarboxylic acid, 1,4-dihydro-1-cyclopropyl-6,8-difluoro-7-(2-((methylamino)methyl)-4-morpholinyl)-4-oxo-

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A solution of 8.3 g of 1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7.1 g of 2 -(methylaminomethyl)morpholine dihydrochloride and 15.2 g of 1,8-diazabicyclo[5.4.0]undec-7-ene in 166 ml of acetonitrile is refluxed for 8 hours. After ice-cooling, the precipitated crystals are collected by filtration, washed with acetone and recrystallized from dimethylformamide to give 1-cyclopropyl-6,8-difluoro-1,4-dihydro-7-[2-(methylaminomethyl)-morpholino]-4-oxoquinoline-3-carboxylic acid, melting at 257°-259° C. with decomposition. The corresponding hydrochloride melts at 288°-290° C. with decomposition.

Workup

  1. temperatureAfter ice-cooling
  2. filtrationthe precipitated crystals are collected by filtration
  3. washwashed with acetone
  4. customrecrystallized from dimethylformamide

Sources & evidence

ORD record
ord-109e920db9e84126b01d7396fdf4a328
Source dataset
uspto-grants-1989_12
Patent number
US04889857

Reaction notes

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