Dichloromethane → tert-butyl 2-[2-(4-amino-1H-imidazo[4,5-c]quinolin-1-yl)ethoxy]ethylcarbamate

HRID 1840853Notes

Reaction equation

HRID 1840853 reaction equation
[O-][N+:2]1[C:11]2[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=2[C:5]2[N:12]([CH2:15][CH2:16][O:17][CH2:18][CH2:19][NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])[CH:13]=[N:14][C:4]=2[CH:3]=1.[NH4+:28].[OH-].C1(C)C=CC(S(Cl)(=O)=O)=CC=1.C(Cl)Cl>ClCCCl>[NH2:28][C:3]1[C:4]2[N:14]=[CH:13][N:12]([CH2:15][CH2:16][O:17][CH2:18][CH2:19][NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])[C:5]=2[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:11]=2[N:2]=1

Participants

6

Reactant 4

HCID 6344DichloromethaneHCID 73974-Toluenesulfonyl chlorideHCID 14923Ammonium Hydroxide2×HCID 21898032tert-butyl 2-[2-(5-oxido-1H-imidazo[4,5-c]quinolin-1yl)ethoxy]ethylcarbamate

Product 1

HCID 21898019tert-butyl 2-[2-(4-amino-1H-imidazo[4,5-c]quinolin-1-yl)ethoxy]ethylcarbamate

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A solution of tert-butyl 2-[2-(5-oxido-1H-imidazo[4,5-c]quinolin-1-yl)ethoxy]ethylcarbamate (4.60 g, 12.4 mmol) in 150 mL of 1,2-dichloroethane was heated to 80° C. and treated with 10 mL of concentrated NH4OH solution. To the rapidly stirred solution was added solid p-toluenesulfonyl chloride (2.71 g, 14.2 mmol) over a 10 min period. The reaction mixture was treated with an additional 2 mL of concentrated NH4OH solution and then sealed in a pressure vessel and heating was continued for 3 h. The reaction mixture was then cooled and treated with 100 mL of CH2Cl2. The reaction mixture was then washed with H2O, 1% Na2CO3 solution (3×) and brine. The organic portion was dried over Na2SO4 and concentrated to give 4.56 g of tert-butyl 2-[2-(4-amino-1H-imidazo[4,5-c]quinolin-1-yl)ethoxy]ethylcarbamate as a light brown foam.

Workup

  1. customsealed in a pressure vessel
  2. temperatureheating
  3. temperatureThe reaction mixture was then cooled
  4. washThe reaction mixture was then washed with H2O, 1% Na2CO3 solution (3×) and brine
  5. dry with materialThe organic portion was dried over Na2SO4
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-0f5f1b2c94a043279a13298b7d77db50
Source dataset
uspto-grants-2004_01
Patent number
US06683088B2

Reaction notes

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