2,4-Dichlorobenzyl isocyanate → N-(2,4-dichlorobenzyl)-N'-(3-methyl-5-isoquinolinyl)urea

HRID 2056895Notes

Reaction equation

HRID 2056895 reaction equation
[NH2:1][C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[CH:4]=[C:5]([CH3:12])[N:6]=[CH:7]2.[Cl:13][C:14]1[CH:19]=[C:18]([Cl:20])[CH:17]=[CH:16][C:15]=1[CH2:21][N:22]=[C:23]=[O:24]>C1(C)C=CC=CC=1>[Cl:13][C:14]1[CH:19]=[C:18]([Cl:20])[CH:17]=[CH:16][C:15]=1[CH2:21][NH:22][C:23]([NH:1][C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[CH:4]=[C:5]([CH3:12])[N:6]=[CH:7]2)=[O:24]

Participants

4

Reactant 2

HCID 46127082,4-Dichlorobenzyl isocyanateHCID 122120553-Methylisoquinolin-5-amine

Product 1

HCID 22032612N-(2,4-dichlorobenzyl)-N'-(3-methyl-5-isoquinolinyl)urea

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

5-Amino-3-methylisoquinoline (390 mg, 2.47 mmol) and the product from Example 195A (0.36 mL, 2.47 mmol) were heated in toluene (10 mL) at 80° for 2.5 hours. Upon cooling to room temperature, a precipitate formed, which was collected by filtration, washed with toluene, and air-dried. Remaining impurities were removed by slurrying the solid in 9:1 CH2Cl2:CH3OH and then filtering the mixture to provide the title compound. The corresponding hydrochloride salt was formed by treatment of the free base with methanolic HCl. 1H NMR (300 MHz, DMSO-d6) δ 9.17 (s, 1H), 8.78 (s, 1H), 8.21 (dd, 1H, J=7.4 Hz, 1.0 Hz), 7.77 (s, 1H), 7.70 (d, 1H, J=8.1 Hz), 7.64 (m, 1H), 7.44-7.52 (m, 3H), 7.14 (t, 1H, J=6.1 Hz), 4.38 (d, 2H, J=6.0 Hz), 2.65 (s, 3H); MS (ESI+) m/z 360/362 (M+H, 35Cl/37 Cl).

Workup

  1. customa precipitate formed
  2. filtrationwhich was collected by filtration
  3. washwashed with toluene
  4. customair-dried
  5. customRemaining impurities were removed
  6. filtrationCH3OH and then filtering the mixture

Sources & evidence

ORD record
ord-092edd872aba458b8133c14f14434738
Source dataset
uspto-grants-2008_02
Patent number
US07335678B2

Reaction notes

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