Isopropyl isocyanate → N-{2-[4-amino-2-ethoxymethyl-7-(pyridin-3-yl)-1H-imidazo[4,5-c]quinolin-1-yl]ethyl}-N'-(1-methylethyl)urea

HRID 1818187Notes

Reaction equation

HRID 1818187 reaction equation
[NH2:1][CH2:2][CH2:3][N:4]1[C:16]2[C:15]3[CH:14]=[CH:13][C:12]([C:17]4[CH:18]=[N:19][CH:20]=[CH:21][CH:22]=4)=[CH:11][C:10]=3[N:9]=[C:8]([NH2:23])[C:7]=2[N:6]=[C:5]1[CH2:24][O:25][CH2:26][CH3:27].[CH:28]([N:31]=[C:32]=[O:33])([CH3:30])[CH3:29]>C(Cl)(Cl)Cl>[NH2:23][C:8]1[C:7]2[N:6]=[C:5]([CH2:24][O:25][CH2:26][CH3:27])[N:4]([CH2:3][CH2:2][NH:1][C:32]([NH:31][CH:28]([CH3:30])[CH3:29])=[O:33])[C:16]=2[C:15]2[CH:14]=[CH:13][C:12]([C:17]3[CH:18]=[N:19][CH:20]=[CH:21][CH:22]=3)=[CH:11][C:10]=2[N:9]=1

Participants

4

Reactant 2

HCID 61277Isopropyl isocyanateHCID 219841051-(2-Aminoethyl)-2-ethoxymethyl-7-(pyridin-3-yl)-1H-imidazo[4,5-c]quinolin-4-amine

Product 1

HCID 21984297N-{2-[4-amino-2-ethoxymethyl-7-(pyridin-3-yl)-1H-imidazo[4,5-c]quinolin-1-yl]ethyl}-N'-(1-methylethyl)ureaYield 28.5%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

A solution of 1-(2-aminoethyl)-2-ethoxymethyl-7-(pyridin-3-yl)-1H-imidazo[4,5-c]quinolin-4-amine (2.50 g, 6.90 mmol) in chloroform (50 mL) was treated with isopropyl isocyanate (0.65 mL, 6.9 mmol) according to the method described in Examples 377-379. The crude product was purified by column chromatography on silica gel (eluting with 94:6 chloroform:methanol) followed by trituration with acetonitrile (15 mL/g) at 95° C. The mixture was cooled in an ice bath, isolated by filtration, and dried for one hour in a vacuum oven at 100° C. to provide 0.88 g of N-{2-[4-amino-2-ethoxymethyl-7-(pyridin-3-yl)-1H-imidazo[4,5-c]quinolin-1-yl]ethyl}-N′-(1-methylethyl)urea as a white solid, mp 194-196° C.

Workup

  1. customThe crude product was purified by column chromatography on silica gel (eluting with 94:6 chloroform:methanol)
  2. customfollowed by trituration with acetonitrile (15 mL/g) at 95° C
  3. temperatureThe mixture was cooled in an ice bath
  4. customisolated by filtration
  5. customdried for one hour in a vacuum oven at 100° C.

Sources & evidence

ORD record
ord-e0573cfdd9ad4dda8fd3e907886eb834
Source dataset
uspto-grants-2009_10
Patent number
US07598382B2

Reaction notes

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