Sodium Carbonate → tert-butyl 2-[(2-ethoxymethyl-5-oxido-1-propyl-1H-imidazo[4,5-c]quinolin-8-yl)oxy]ethylcarbamate

HRID 540814Notes

Reaction equation

HRID 540814 reaction equation
C1C=C(Cl)C=C(C(OO)=[O:9])C=1.[C:12]([O:16][C:17](=[O:42])[NH:18][CH2:19][CH2:20][O:21][C:22]1[CH:31]=[CH:30][C:29]2[N:28]=[CH:27][C:26]3[N:32]=[C:33]([CH2:38][O:39][CH2:40][CH3:41])[N:34]([CH2:35][CH2:36][CH3:37])[C:25]=3[C:24]=2[CH:23]=1)([CH3:15])([CH3:14])[CH3:13].C(=O)([O-])[O-].[Na+].[Na+]>C(Cl)(Cl)Cl>[CH2:40]([O:39][CH2:38][C:33]1[N:34]([CH2:35][CH2:36][CH3:37])[C:25]2[C:24]3[CH:23]=[C:22]([O:21][CH2:20][CH2:19][NH:18][C:17](=[O:42])[O:16][C:12]([CH3:13])([CH3:14])[CH3:15])[CH:31]=[CH:30][C:29]=3[N+:28]([O-:9])=[CH:27][C:26]=2[N:32]=1)[CH3:41]

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 70297m-Chloroperbenzoic acidHCID 131731977tert-butyl[2-(2-ethoxymethyl-1-propyl-1H-imidazo[4,5-c]quinolin-8-yloxy)ethyl]carbamate

Product 1

HCID 68973926tert-butyl 2-[(2-ethoxymethyl-5-oxido-1-propyl-1H-imidazo[4,5-c]quinolin-8-yl)oxy]ethylcarbamateYield 64.9%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent2×

Procedure

mCPBA (60% pure, 12.76 g, 44.36 mmol) was added in one portion to a solution of tert-butyl[2-(2-ethoxymethyl-1-propyl-1H-imidazo[4,5-c]quinolin-8-yloxy)ethyl]carbamate (14.4 g, 33.6 mmol) and chloroform (150 mL); the reaction mixture was stirred for 30 minutes. The reaction mixture was then poured into saturated aqueous sodium carbonate (100 mL) and stirred for 30 minutes. Chloroform (250 mL) was added, and the organic fraction was washed sequentially with 5% aqueous sodium carbonate, water, and brine; dried over magnesium sulfate; filtered; and concentrated under reduced pressure. The resulting red oil was triturated with ethyl acetate to provide 9.7 g of tert-butyl 2-[(2-ethoxymethyl-5-oxido-1-propyl-1H-imidazo[4,5-c]quinolin-8-yl)oxy]ethylcarbamate as a peach-colored powder.

Workup

  1. stirringstirred for 30 minutes
  2. washthe organic fraction was washed sequentially with 5% aqueous sodium carbonate, water, and brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationand concentrated under reduced pressure
  6. customThe resulting red oil was triturated with ethyl acetate

Sources & evidence

ORD record
ord-c4ea2c00cbc9492997a3f08569f53f39
Source dataset
uspto-grants-2014_10
Patent number
US08871782B2

Reaction notes

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