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

HRID 1742949

Reaction equation

HRID 1742949 reaction equation
[CH:1]1([N:4]2[C:13]3[C:8](=[C:9]([CH3:17])[C:10]([F:16])=[C:11](F)[C:12]=3[F:14])[C:7](=[O:18])[C:6]([C:19]([OH:21])=[O:20])=[CH:5]2)[CH2:3][CH2:2]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>[CH:1]1([N:4]2[C:13]3[C:8](=[C:9]([CH3:17])[C:10]([F:16])=[C:11]([N:30]4[CH2:31][CH2:32][CH:28]([N:23]5[CH:27]=[N:26][CH:25]=[N:24]5)[CH2:29]4)[C:12]=3[F:14])[C:7](=[O:18])[C:6]([C:19]([OH:21])=[O:20])=[CH:5]2)[CH2:2][CH2:3]1

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 146512581-Cyclopropyl-5-methyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acidHCID 190059941-(pyrrolidin-3-yl)-1H-1,2,4-triazole hydrochloride

Product 1

HCID 190060051-Cyclopropyl-6,8-difluoro-5-methyl-7-[3-(1,2,4-triazol-1-yl)-pyrrolidin-1-yl]-1,4-dihydro-4-oxoquinoline-3-carboxylic acidYield 28.9%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

1-Cyclopropyl-5-methyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (30 mg, 0.1 mmol) was reacted with 40 mg (0.2 mmol) of 3-(1,2,4-triazol-1-yl)pyrrolidine hydrochloride in 2 ml of pyridine in the presence of 70 mg (0.45 mmol) of DBU at 95° C. overnight. The orange solution was evaporated to dryness and to the residue water was added. The orange solid was collected and washed with methanol to yield 19 mg of the crude product, which upon further purification from methanol yielded 12 mg of the desired product. m.p. 207°-210° C. 1H NMR (TFA) δ: 9.81 (s, 1H), 9.27 (s, 1H), 8.78 (s, 1H), 5.75-5.55 (m, 1H), 4.83-4.12 (m, 5H), 3.0-2.7 (m, 5H), 1.7-1.2 (m, 4H). Anal. calcd. for C20H19F2N5O3H2O: C, 55.43; H, 4.88; N, 16.16. Found: C, 55.72; H, 4.73; N, 15.65.

Workup

  1. customThe orange solution was evaporated to dryness and to the residue water
  2. additionwas added
  3. customThe orange solid was collected
  4. washwashed with methanol
  5. customto yield 19 mg of the crude product, which
  6. customupon further purification from methanol

Sources & evidence

ORD record
ord-e1be6c11a61e4b1dbaa32ef633c285cc
Source dataset
uspto-grants-1994_08
Patent number
US05342846

Linked notes

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