Benzoyl chloride → N1-[4-(4-amino-2-butyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]benzamide

HRID 1280472Notes

Reaction equation

HRID 1280472 reaction equation
[NH2:1][CH2:2][CH2:3][CH2:4][CH2:5][N:6]1[C:18]2[C:17]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=3[N:11]=[C:10]([NH2:19])[C:9]=2[N:8]=[C:7]1[CH2:20][CH2:21][CH2:22][CH3:23].[C:24](Cl)(=[O:31])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1>N1C=CC=CC=1>[NH2:19][C:10]1[C:9]2[N:8]=[C:7]([CH2:20][CH2:21][CH2:22][CH3:23])[N:6]([CH2:5][CH2:4][CH2:3][CH2:2][NH:1][C:24](=[O:31])[C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[C:18]=2[C:17]2[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=2[N:11]=1

Participants

4

Reactant 2

HCID 7412Benzoyl chlorideHCID 155382261-(4-Aminobutyl)-2-butyl-1H-imidazo[4,5-c]quinolin-4-amine

Product 1

HCID 9909787N1-[4-(4-amino-2-butyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]benzamide

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Conditions

Temperature
50 °C

Procedure

1-(4-Aminobutyl)-2-butyl-1H-imidazo[4,5-c]quinolin-4-amine (0.5 g, 1.6 mmol) was combined with pyridine (50 mL) and heated to 50° C. Benzoyl chloride (0.22 g, 1.6 mmol) was added via a pipette. After 1 hour analysis by HPLC indicated that all of the starting material was gone and that several products had formed. The reaction mixture was concentrated under vacuum. The residue was combined with dichloromethane and aqueous sodium bicarbonate. The organic layer was separated and then concentrated under vacuum. The residue was dissolved in dichloromethane and placed on a silica gel column. The column was eluted with 5% methanol in dichloromethane and then with 10% methanol in dichloromethane. The 10% methanol in dichloromethane fractions were combined and concentrated under vacuum to provide N1-[4-(4-amino-2-butyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]benzamide as a solid, m.p. 174-175° C. 1H NMR (500 MHz, DMSO-d6) δ8.48 (t, J=6.0 Hz, 1H), 8.00 (d, J=8.0 Hz, 1H), 7.78 (d, J=8.0 Hz, 2H), 7.60 (d, J=8.0 Hz, 1H), 7.50 (t, J=8.0 Hz, 1H), 7.43 (t, J=8.0 Hz, 2H), 7.39 (t, J=8.0 Hz, 1H), 7.18 (t, J=8.0 Hz, 1H), 6.50 (broad s, 2H), 4.54 (t, J=7.0 Hz, 2H), 3.32 (m, 2H), 2.91 (t, J=7.0 Hz, 2H), 1.86 (quintet, J=7.0 Hz, 2H), 1.77 (quintet, J=7.0 Hz, 2H), 1.70 (quintet, J=7.0 Hz, 2H), 1.41 (sextet, J=7.0 Hz, 2H), 0.91 (t, J=7.0 Hz, 3H); MS (CI) m/e 416 (M+H).

Workup

  1. customhad formed
  2. concentrationThe reaction mixture was concentrated under vacuum
  3. customThe organic layer was separated
  4. concentrationconcentrated under vacuum
  5. dissolutionThe residue was dissolved in dichloromethane
  6. washThe column was eluted with 5% methanol in dichloromethane
  7. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-56a6404a44864766b2efc340d669d7fb
Source dataset
uspto-grants-2002_09
Patent number
US06451810B1

Reaction notes

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