Reaktion #4111

Reaktionsgleichung

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

Lösungsmittel

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturwas heated under nitrogen until a solution
2. 2
   Sonstigeresulted
3. 3
   TemperaturThe mixture was heated
4. 4
   Temperaturunder reflux for three hours
5. 5
   Filtrationfiltered
6. 6
   Sonstigethe layers were separated
7. 7
   ExtraktionThe aqueous phase was extracted with 250 ml of toluene
8. 8
   Waschenwashed once with 2N sodium hydroxide solution, twice with water
9. 9
   Trocknendried over anhydrous sodium sulfate
10. 10
    Filtrationfiltered
11. 11
    Einengenconcentrated in vacuo to 8.1 g (98%) of product
12. 12
    SonstigeRecrystallization from ethyl acetate
13. 13
    Sonstigeprovided the analytical sample, mp 194°-196° C.

Vorschrift

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.

Quelle