Reaktion #354735

Reaktionsgleichung

Tryptamine

levulinic acid

→

title compound

1,2,5,6,11,11b-Hexahydro-11b-methyl-3H-indolizino[8,7-b]indol-3-one

Lösungsmittel

butyl cellosolve

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigethe solvent is removed
2. 2
   WaschenThe residue is successively washed with water, dilute aqueous sodium hydroxide, water, dilute aqueous hydrochloric acid, water
3. 3
   Sonstigedried
4. 4
   TrocknenTrituration of the crude product, decomposition at 252°-262°C., with methanol, and then with benzene, and drying
5. 5
   Sonstigeprovides 120.4 g

Vorschrift

Tryptamine (112.15 g.), levulinic acid (97.6 g., 85.6 ml.) and butyl cellosolve (1 liter) are refluxed under nitrogen for 16 hours and the solvent is removed. The residue is successively washed with water, dilute aqueous sodium hydroxide, water, dilute aqueous hydrochloric acid, water and dried. Trituration of the crude product, decomposition at 252°-262°C., with methanol, and then with benzene, and drying provides 120.4 g. of the title compound, decomposition at 259°-263°C.; λmaxKBr 3.09, 6.01, 6.17, 13.38 μ.

Quelle