1,8-Diazabicyclo(5.4.0)undec-7-ene → 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 1534655Notes

Reaction equation

HRID 1534655 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.Br.Br.[C:23]12[CH2:30][NH:29][CH2:28][C:27]=1[CH2:26][NH:25][CH2:24]2.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:25]4[CH2:26][C:27]5[CH2:28][NH:29][CH2:30][C:23]=5[CH2:24]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 232828491,2,3,4,5,6-Hexahydropyrrolo[3,4-c]pyrrole dihydrobromide

Product 1

HCID 98643051-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 67%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

The solution of 0.4 g of 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 0.8 ml of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in 30 ml of acetonitrile was refluxed in oil bath at the temperature of 100° C. for 8 hours, and this reaction mixture was kept overnight at the room temperature. The product precipitate was filtered off and then the residue was washed with methanol, to obtain 0.35 g of the title compound (yield 67%).

Workup

  1. filtrationThe product precipitate was filtered off
  2. washthe residue was washed with methanol

Sources & evidence

ORD record
ord-38188f7c14414c6c88eb1ce5604e19bc
Source dataset
uspto-grants-1992_02
Patent number
US05089621

Reaction notes

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