1,8-Diazabicyclo(5.4.0)undec-7-ene → 5-Amino-1-cyclopropyl-6,8-difluoro-7-[3-(1,2,4-triazol-1-yl)pyrrolidin-1-yl]-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

HRID 1742954

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.Cl.[N:23]1([CH:28]2[CH2:32][CH2:31][NH:30][CH2:29]2)[CH:27]=[N:26][CH:25]=[N:24]1.C1CCN2C(=NCCC2)CC1>N1C=CC=CC=1>[NH2:1][C:2]1[C:11]([F:12])=[C:10]([N:30]2[CH2:31][CH2:32][CH:28]([N:23]3[CH:27]=[N:26][CH:25]=[N:24]3)[CH2:29]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: 95 °C

Procedure

To a suspension of 60 mg (0.2 mmol) of 5-amino -1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline -3-carboxylic acid and 80 mg of 3-(1,2,4-triazol-1-yl)pyrrolidine hydrochloride in 3 ml of dry pyridine under nitrogen was added 140 mg (0.9 mmol) of DBU, and the suspension was heated at 95° C. for 22 h. The resulting orange solution was then evaporated to dryness, water was added to the residue, and the orange solid was collected and washed with methanol to give 50 mg (60%) of yellowish solid after drying in vac-oven, m.p. 240.3°-242-3° C. 1H NMR (TFA) δ: 9.8 (s, 1H), 9.14 (s, 1H), 8.77 (s, 1H), 5.78-5.55 (m, 1H), 4.76-4.12 (m, 5H), 2.9-2.65 (m, 2H), 1.65-1.2 (m, 4H). Anal. calcd. for C19H18F 2 N6O3 : C, 54.81; H, 4.36; N, 20.17. Found: C, 54.52; H, 4.44; N, 20.00.

Workup

customThe resulting orange solution was then evaporated to dryness, water
additionwas added to the residue
customthe orange solid was collected
washwashed with methanol

Sources & evidence

ORD record: ord-d40fec340b0549a58b9c49e79a548f1e
Source dataset: uspto-grants-1994_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05342846

Linked notes

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