Реакция #60655

Уравнение реакции

triethylamine

1-[2-(2-aminoethoxy)ethyl]-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-4-amine

Palmitoyl chloride

→

N-(2-{2-[4-amino-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-1-yl]ethoxy}ethyl)hexadecanamide

Выход 75.3%

Растворители

dichloromethane

dichloromethane

Условия реакции

Обработка

1. 1
   workup.WAITleft
2. 2
   Промывкаwashed with saturated sodium bicarbonate solution (2×5 mL)
3. 3
   Сушкаdried over magnesium sulfate
4. 4
   Концентрированиеconcentrated under reduced pressure
5. 5
   ДругоеThe resulting residue was purified by column chromatography (12 g of silica gel eluted with 2% methanol in dichloromethane)

Методика

Under a nitrogen atmosphere, a suspension of 1-[2-(2-aminoethoxy)ethyl]-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-4-amine (140.5 mg, 0.428 mmol) in a mixture of dichloromethane (3.5 mL) and triethylamine (150 μL, 1.07 mmol) was cooled to 0° C. Palmitoyl chloride (130 μL, 0.428 mmol) was slowly added. The reaction mixture was allowed to stir at 0° C. for 2 hours at which time analysis by thin layer chromatography indicated that there was no starting material left. The reaction mixture was diluted with dichloromethane (30 mL), washed with saturated sodium bicarbonate solution (2×5 mL), dried over magnesium sulfate and then concentrated under reduced pressure. The resulting residue was purified by column chromatography (12 g of silica gel eluted with 2% methanol in dichloromethane) to provide 183 mg of N-(2-{2-[4-amino-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-1-yl]ethoxy}ethyl)hexadecanamide as a white powder.

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