1,8-Diazabicyclo(5.4.0)undec-7-ene → 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 1534817Notes

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.N12CCCN=C1CCCCC2>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

Conditions

Temperature: 100 °C

Procedure

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] undec-7-ene (DBU) were suspended in 40 ml of acetonitrile and the suspension was refluxed in 100° C. oil bath for 7 hours. The reaction mixture was kept overnight at room temperature. The produced precipitate was filtered and washed with methanol. 0.3 g of the titled compound was obtained (yield 57%).

Workup

filtrationThe produced precipitate was filtered
washwashed with methanol

Sources & evidence

ORD record: ord-32757052a0f24ddc93c994f1cb6dbc6e
Source dataset: uspto-grants-1992_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05091384

Reaction notes

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