Triethylamine → HCID 68974210, compound

Participants

Reaction Steps

tert-Butyl {4-[3-amino-7-(benzyloxy)quinolin-4-ylamino]butyl}carbamate (28.1 g, 64.3 mmol) was dissolved in dichloromethane (319 mL). Ethoxyacetyl chloride (7.87 g, 64.5 mmol) was added dropwise via an addition funnel and the mixture was stirred for 1 hour. The dichloromethane was removed under reduced pressure and the resulting residue was dissolved in a solution of triethylamine (35.84 mL, 0.26 mol) and ethanol (319 mL). The reaction was heated at reflux for 4 hours, and then allowed to cool overnight. The solvent was evaporated under reduced pressure and the residue was dissolved in dichloromethane. The organic fraction was washed sequentially with water and saturated aqueous sodium chloride; dried over anhydrous sodium sulfate; filtered; and concentrated under reduced pressure. The oily residue was dissolved in acetonitrile. The acetonitrile was subsequently removed under reduced pressure to provide 30 g of tert-butyl [4-(7-benzyloxy-2-ethoxymethyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]carbamate as a brown solid.

Provenance & Evidence