反応 #60431

反応方程式

2-cycloheptylphenylamine

bis(2-chloroethyl)amine hydrochloride

→

title compound

収率 73.3%

1-(2-Cycloheptylphenyl)piperazine

収率 73.3%

溶媒

1,2-dichlorobenzene

反応条件

後処理

1. 1
   その他During the reaction
2. 2
   その他to remove the hydrogen chloride gas in the reactor
3. 3
   温度the mixture was air-cooled to room temperature
4. 4
   workup.ADDITIONTo the reaction mixture were added aqueous
5. 5
   抽出solution of potassium carbonate, ethyl acetate and methanol, and extraction
6. 6
   乾燥The obtained organic layers were dried over anhydrous sodium sulfate
7. 7
   ろ過the desiccant was filtered off
8. 8
   濃縮the filtrate was concentrated under reduced pressure
9. 9
   その他The obtained residue was purified by NH silica gel column chromatography (ethyl acetate/heptane)

実験手順

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.

出典