Реакция #4111

Уравнение реакции

9-methyl-1,2-dihydrobenzo[b]pyrrolo[3,2,1-jk][1,4]benzodiazepin-6-one

4-methylpiperidine

→

9-Methyl-6-(4-methyl-1-piperidinyl)-1,2-dihydrobenzo[b]pyrrolo[3,2,1-jk][1,4]benzodiazepine

Растворители

toluene

Условия реакции

Обработка

1. 1
   Температураwas heated under nitrogen until a solution
2. 2
   Другоеresulted
3. 3
   ТемператураThe mixture was heated
4. 4
   Температураunder reflux for three hours
5. 5
   Фильтрацияfiltered
6. 6
   Другоеthe layers were separated
7. 7
   ЭкстракцияThe aqueous phase was extracted with 250 ml of toluene
8. 8
   Промывкаwashed once with 2N sodium hydroxide solution, twice with water
9. 9
   Сушкаdried over anhydrous sodium sulfate
10. 10
    Фильтрацияfiltered
11. 11
    Концентрированиеconcentrated in vacuo to 8.1 g (98%) of product
12. 12
    ДругоеRecrystallization from ethyl acetate
13. 13
    Другоеprovided the analytical sample, mp 194°-196° C.

Методика

A stirred mixture of 6.26 g (0.0250 mole) of 9-methyl-1,2-dihydrobenzo[b]pyrrolo[3,2,1-jk][1,4]benzodiazepin-6-one and 1000 ml of toluene was heated under nitrogen until a solution resulted. Then there was added 24.8 g (0.250 mole) of 4-methylpiperidine, followed by 14.2 g (0.075 mole) of titanium tetrachloride. The mixture was heated under reflux for three hours, cooled to room temperature and filtered. The filtrate was stirred with 500 ml of 2N sodium hydroxide solution for 15 minutes and the layers were separated. The aqueous phase was extracted with 250 ml of toluene. The toluene layers were combined, washed once with 2N sodium hydroxide solution, twice with water, dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo to 8.1 g (98%) of product. Recrystallization from ethyl acetate provided the analytical sample, mp 194°-196° C.

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