5-Amino-1-cyclopropyl-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid → 5-Amino-1-cyclopropyl-7-[3,7-diazabicyclo[3.3.0]oct-1(5)-en-3-yl]-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

HRID 1534656Notes

Reaction equation

HRID 1534656 reaction equation
[NH2:1][C:2]1[C:11]([F:12])=[C:10](F)[C:9]([F:14])=[C:8]2[C:3]=1[C:4](=[O:21])[C:5]([C:18]([OH:20])=[O:19])=[CH:6][N:7]2[CH:15]1[CH2:17][CH2:16]1.Br.Br.[C:24]12[CH2:31][NH:30][CH2:29][C:28]=1[CH2:27][NH:26][CH2:25]2>C(#N)C>[NH2:1][C:2]1[C:11]([F:12])=[C:10]([N:26]2[CH2:27][C:28]3[CH2:29][NH:30][CH2:31][C:24]=3[CH2:25]2)[C:9]([F:14])=[C:8]2[C:3]=1[C:4](=[O:21])[C:5]([C:18]([OH:20])=[O:19])=[CH:6][N:7]2[CH:15]1[CH2:16][CH2:17]1

Participants

4

Reactant 2

HCID 139109475-Amino-1-cyclopropyl-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acidHCID 232828491,2,3,4,5,6-Hexahydropyrrolo[3,4-c]pyrrole dihydrobromide

Product 1

HCID 99522255-Amino-1-cyclopropyl-7-[3,7-diazabicyclo[3.3.0]oct-1(5)-en-3-yl]-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acidYield 57.6%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

The solution of 0.4 g of 5-amino-1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 0.8 g of 3,7-diazabicyclo[3.3.0]oct-1(5)-ene dihydrobromide, and 0.6 ml of 1,8-diazabicyclo[5.4.0]undex-7-ene (DBU) in 40 ml of acetonitrile was refluxed at the reaction temperature of 100° C. for 7 hours. This reaction mixture was kept overnight at the room temperature, and the produced precipitate was filtered and then the residue was washed with ethanol to obtain 0.3 g of the title compound (yield 57%).

Workup

  1. filtrationthe produced precipitate was filtered
  2. washthe residue was washed with ethanol

Sources & evidence

ORD record
ord-050c246f900b40e6b1a1336247b3652e
Source dataset
uspto-grants-1992_02
Patent number
US05089621

Reaction notes

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