Reaktion #1120022

Reaktionsgleichung

1-amino-2-chloro-5a,6,7,8,9,9a-hexahydrodibenzofuran-4-carboxylic acid

triethylamine

dihydrochloride

ethylchloroformate

→

1-amino-2-chloro-5a,6,7,8,9,9a-hexahydrodibenzofuran

Lösungsmittel

chloroform

water

chloroform

chloroform

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGStirring
2. 2
   workup.WAITis continued overnight
3. 3
   Sonstigethe two layers separated
4. 4
   Waschenthe chloroform layer washed twice with water
5. 5
   Trocknendried over magnesium sulfate
6. 6
   Sonstigeevaporated to dryness

Vorschrift

To a cold solution of 0.3 g 1-amino-2-chloro-5a,6,7,8,9,9a-hexahydrodibenzofuran-4-carboxylic acid in 40 ml chloroform is added 0.3 g of triethylamine and then 0.2 g ethylchloroformate in 10 ml chloroform. Stirring is continued for 2 hours. This is then added to a cold mixture of 3 g 3-aminoguinuclidine dihydrochloride in 20 ml water containing 7.5 g K2CO3. Stirring is continued overnight. The reaction mxiture is then diluted with chloroform, the two layers separated and the chloroform layer washed twice with water, dried over magnesium sulfate and evaporated to dryness to give 1-amino-2-chloro-5a,6,7,8,9,9a-hexahydrodibenzofuran-4-(N-1-azabicylo[2.2.2.]oct-3-yl]carboxamide as an oily product.

Quelle