تفاعل #657283

معادلة التفاعل

1-Methoxy-piperidin-4-one

potassium cyanide

cyclopropylamine

hydrochloric acid

→

4-Cyclopropylamino-1-methoxy-piperidine-4-carbonitrile

المذيبات

water

diethyl ether

water

methanol

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONwere then added dropwise at 0° C
2. 2
   درجة الحرارةThe reaction mixture was warmed to room temperature
3. 3
   workup.STIRRINGstirred overnight
4. 4
   أخرىthe layers separated
5. 5
   استخلاصthe aqueous phase thoroughly extracted with diethyl ether
6. 6
   غسيلThe combined organic layers were washed with brine
7. 7
   تجفيفdried over sodium sulfate
8. 8
   أخرىevaporated
9. 9
   أخرىThis material was used without further purification in the next step

الإجراء التجريبي

To a solution of cyclopropylamine (1.4 ml, 1.14 g, 20.0 mmol) in methanol (20 ml) at 0° C. was added 1N hydrochloric acid (20 ml, 20.0 mmol) dropwise and the mixture was stirred at room temperature for 30 minutes. 1-Methoxy-piperidin-4-one [prepared according to Journal of Organic Chemistry (1961), 26, 1867-74] (2.58 g, 20.0 mmol), followed 10 minutes later by potassium cyanide (1.3 g, 20.0 mmol) in water (10 ml) were then added dropwise at 0° C. The reaction mixture was warmed to room temperature and stirred overnight, diluted with water and diethyl ether, the layers separated and the aqueous phase thoroughly extracted with diethyl ether. The combined organic layers were washed with brine, dried over sodium sulfate and evaporated. Yield: 3.19 g of 4-cyclopropylamino-1-methoxy-piperidine-4-carbonitrile (title compound P5.2) as an oil. This material was used without further purification in the next step.

المصدر