2-Thiophenecarbonyl chloride → 6-Fluoro-1-methyl-2-oxo-4-[4-(thiophene-2-carbonyl)-piperazin-1-yl]-1,2-dihydro-quinolin-3-carbonitrile

HRID 970515Notes

Reaction equation

HRID 970515 reaction equation
[S:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6](Cl)=[O:7].[F:9][C:10]1[CH:11]=[C:12]2[C:17](=[CH:18][CH:19]=1)[N:16]([CH3:20])[C:15](=[O:21])[C:14]([C:22]#[N:23])=[C:13]2[N:24]1[CH2:29][CH2:28][NH:27][CH2:26][CH2:25]1>N1C=CC=CC=1>[F:9][C:10]1[CH:11]=[C:12]2[C:17](=[CH:18][CH:19]=1)[N:16]([CH3:20])[C:15](=[O:21])[C:14]([C:22]#[N:23])=[C:13]2[N:24]1[CH2:25][CH2:26][N:27]([C:6]([C:2]2[S:1][CH:5]=[CH:4][CH:3]=2)=[O:7])[CH2:28][CH2:29]1

Participants

4

Reactant 2

HCID 789282-Thiophenecarbonyl chlorideHCID 211143516-Fluoro-1-methyl-2-oxo-4-(piperazin-1-yl)-1,2-dihydro-quinolin-3-carbonitrile

Product 1

HCID 210819796-Fluoro-1-methyl-2-oxo-4-[4-(thiophene-2-carbonyl)-piperazin-1-yl]-1,2-dihydro-quinolin-3-carbonitrileYield 98.4%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

2-Thiophene carbonyl chloride (160 μL, 1.5 mmol) was added to a stirred solution of Compound 50 (286 mg, 1.0 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 ethyl acetate to yield 390 mg (98%) of white solids. M.P. 286° C. 1H NMR (DMSO-d6): δ 3.58 (s, 3H), 3.62 (m, 4H), 3.92 (m, 4H), 7.16 (dd, J=3.5, 5.0, 1H), 7.50 (d, J=3.2 Hz, 1H), 7.63-7.68 (m, 3H), 7.80 (d, J=4.8 Hz, 1H). EIMS m/z 397 (M+1). Anal. (C20H17FN4O2S) C,H, N.

Workup

  1. customthe solids formed
  2. filtrationwere filtered
  3. washThe solids were washed by excess water
  4. customdried
  5. customrecrystallized by ethyl acetate

Sources & evidence

ORD record
ord-7c1ee73c343c4e1eb9521b7b61391f55
Source dataset
uspto-grants-2007_12
Patent number
US07312220B2

Reaction notes

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