Реакция #60431

Уравнение реакции

2-cycloheptylphenylamine

bis(2-chloroethyl)amine hydrochloride

→

title compound

Выход 73.3%

1-(2-Cycloheptylphenyl)piperazine

Выход 73.3%

Растворители

1,2-dichlorobenzene

Условия реакции

Обработка

1. 1
   ДругоеDuring the reaction
2. 2
   Другоеto remove the hydrogen chloride gas in the reactor
3. 3
   Температураthe mixture was air-cooled to room temperature
4. 4
   workup.ADDITIONTo the reaction mixture were added aqueous
5. 5
   Экстракцияsolution of potassium carbonate, ethyl acetate and methanol, and extraction
6. 6
   СушкаThe obtained organic layers were dried over anhydrous sodium sulfate
7. 7
   Фильтрацияthe desiccant was filtered off
8. 8
   Концентрированиеthe filtrate was concentrated under reduced pressure
9. 9
   ДругоеThe obtained residue was purified by NH silica gel column chromatography (ethyl acetate/heptane)

Методика

To a solution of the 2-cycloheptylphenylamine (539 mg, 2.85 mmol) produced in Example (44b) in 1,2-dichlorobenzene (7 mL) was added bis(2-chloroethyl)amine hydrochloride (610 mg, 3.42 mmol), and the mixture was stirred at an external temperature of 200° C. under a nitrogen atmosphere. During the reaction, a nitrogen stream was blown into the reactor to remove the hydrogen chloride gas in the reactor. This procedure was repeated several times. After 8 hours, the mixture was air-cooled to room temperature. To the reaction mixture were added aqueous solution of potassium carbonate, ethyl acetate and methanol, and extraction was performed three times with ethyl acetate. The obtained organic layers were dried over anhydrous sodium sulfate, and then the desiccant was filtered off and the filtrate was concentrated under reduced pressure. The obtained residue was purified by NH silica gel column chromatography (ethyl acetate/heptane) to give 540 mg of the title compound as a brown oil.

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