Triethylamine → ethyl 4-{(1S)-1-[3-(3,5-dichlorophenyl)-5-quinolin-3-yl-1H-pyrazol-1-yl]ethyl}benzoate

HRID 1865419Notes

Reaction equation

HRID 1865419 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:9]#[C:10][C:11]([C:13]2[CH:14]=[N:15][C:16]3[C:21]([CH:22]=2)=[CH:20][CH:19]=[CH:18][CH:17]=3)=O)[CH:5]=[C:6]([Cl:8])[CH:7]=1.Cl.[NH:24]([C@H:26]([C:28]1[CH:38]=[CH:37][C:31]([C:32]([O:34][CH2:35][CH3:36])=[O:33])=[CH:30][CH:29]=1)[CH3:27])[NH2:25].C(N(CC)CC)C>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[CH:10]=[C:11]([C:13]3[CH:14]=[N:15][C:16]4[C:21]([CH:22]=3)=[CH:20][CH:19]=[CH:18][CH:17]=4)[N:24]([C@H:26]([C:28]3[CH:38]=[CH:37][C:31]([C:32]([O:34][CH2:35][CH3:36])=[O:33])=[CH:30][CH:29]=3)[CH3:27])[N:25]=2)[CH:5]=[C:6]([Cl:8])[CH:7]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 67484658ethyl 4-[(1S)-1-hydrazinoethyl]benzoate hydrochlorideHCID 685677233-(3,5-Dichlorophenyl)-1-quinolin-3-ylprop-2-yn-1-one

Product 1

HCID 68568297ethyl 4-{(1S)-1-[3-(3,5-dichlorophenyl)-5-quinolin-3-yl-1H-pyrazol-1-yl]ethyl}benzoate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of the intermediate from step C (152 mg, 0.46 mmol) in DMF (5 mL) was added the ethyl 4-[(1S)-1-hydrazinoethyl]benzoate hydrochloride (126 mg, 0.51 mmol) and triethyl amine (86 μL, 0.61 mmol). After stirring, the reaction mixture at room temperature for 2 hours it was concentrated in vacuo. The residue was diluted with water and ethyl acetate. The organic layer was washed with brine, dried over anhydrous Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography using 10% ethyl acetate-hexanes. This material was then re-purified with 75% hexanes-dichloromethane to give the desired compound as the major product. 1H NMR (CDCl3, 500 MHz): 8.84 (d, J=2.0 Hz, 1H), 8.18 (d, J=8.5 Hz, 1H), 8.03 (d, J=8.2 Hz, 2H), 7.99 (d, J=2.1 Hz, 1H), 7.83 (d, J=1.8 Hz, 2H), 7.78 (m, 1H), 7.62 (t, J=8.0 Hz, 1H), 7.34 (t, J=1.8 Hz, 1H), 7.28 (d, J=8.2 Hz, 2H), 6.77 (s, 1H), 5.58 (q, J=7.1 Hz, 1H), 4.41 (q, J=7.1 Hz, 2H), 2.02 (d, J=7.1 Hz, 3H), 1.4 (t, J=7.0 Hz, 3H). LC-MS: 4.64 min; (M+H)=516.3.

Workup

  1. concentrationthe reaction mixture at room temperature for 2 hours it was concentrated in vacuo
  2. additionThe residue was diluted with water and ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatography
  8. customThis material was then re-purified with 75% hexanes-dichloromethane

Sources & evidence

ORD record
ord-ab6dada6b85945c2854429e824a9c395
Source dataset
uspto-grants-2009_12
Patent number
US07625938B2

Reaction notes

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