2-Furancarbonyl chloride → 1-Benzyl-4-[4-(furan-2-carbonyl)-piperazin-1-yl]-6-methyl-2-oxo-1,2-dihydro-quinolin-3-carbonitrile

HRID 346600Notes

Reaction equation

HRID 346600 reaction equation
[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6](Cl)=[O:7].[CH2:9]([N:16]1[C:25]2[C:20](=[CH:21][C:22]([CH3:26])=[CH:23][CH:24]=2)[C:19]([N:27]2[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]2)=[C:18]([C:33]#[N:34])[C:17]1=[O:35])[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1>N1C=CC=CC=1>[CH2:9]([N:16]1[C:25]2[C:20](=[CH:21][C:22]([CH3:26])=[CH:23][CH:24]=2)[C:19]([N:27]2[CH2:32][CH2:31][N:30]([C:6]([C:2]3[O:1][CH:5]=[CH:4][CH:3]=3)=[O:7])[CH2:29][CH2:28]2)=[C:18]([C:33]#[N:34])[C:17]1=[O:35])[C:10]1[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=1

Participants

4

Reactant 2

HCID 682422-Furancarbonyl chlorideHCID 210819181-Benzyl-6-methyl-2-oxo-4-(piperazin-1-yl)-1,2-dihydro-quinolin-3-carbonitrile

Product 1

HCID 210819031-Benzyl-4-[4-(furan-2-carbonyl)-piperazin-1-yl]-6-methyl-2-oxo-1,2-dihydro-quinolin-3-carbonitrileYield 93.9%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

2-Furoyl chloride (118 μL, 1.2 mmol) was added to a stirred solution of Compound 26 (287 mg, 0.8 mmol) in pyridine (5 mL) under argon at 0° C. The solution was allowed to come to room temperature and further stirred overnight. The solution was poured into ice water and the solids formed were filtered. The solids were washed by excess water, dried and recrystallized by hexane and ether to yield 340 mg (90%) of white solids. M.P. 146° C. 1H NMR (DMSO-d6): δ 2.36 (s, 3H), 3.69 (m, 4H), 3.97 (m, 4H), 5.47 (s, 2H), 6.66 (t, J=2.5 Hz, 1H), 7.09 (d, J=3.4 Hz, 1H), 7.18 (d, J=7.3 Hz, 2H), 7.23 (d, J=7.4 Hz, 1H), 7.29–7.33 (m, 3H), 7.44 (d, J=1.3, 8.7 Hz, 1H), 7.71 (s, 1H), 7.89 (s, 1H). EIMS m/z 475 (M+23). Anal. (C27H24N4O3) C, H, N.

Workup

  1. customthe solids formed
  2. filtrationwere filtered
  3. washThe solids were washed by excess water
  4. customdried
  5. customrecrystallized by hexane and ether

Sources & evidence

ORD record
ord-6875c1a238684f829d1dab3dd074c189
Source dataset
uspto-grants-2007_02
Patent number
US07173036B2

Reaction notes

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