Reaktion #65206

Reaktionsgleichung

6-(2-chlorobenzoyl)-5-(2-chlorobenzoylamino)indan

ammonia

→

5-amino-6-(2-chlorobenzoyl)indan

Ausbeute 94.4%

Lösungsmittel

H2SO4

—

ice water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Extraktionextracted with ethyl acetate
2. 2
   WaschenThe extract was washed with water
3. 3
   Trocknendried (MgSO4)
4. 4
   workup.DISTILLATIONthe solvent was distilled off

Vorschrift

A mixture of 6-(2-chlorobenzoyl)-5-(2-chlorobenzoylamino)indan (16.0 g) and 70% H2SO4 (100 ml) was heated at 120° C. for 30 minutes and, then, poured in ice-water (300 ml). The solution was alkalinized with concentrated aqueous ammonia and extracted with ethyl acetate. The extract was washed with water and dried (MgSO4) and the solvent was distilled off to give 5-amino-6-(2-chlorobenzoyl)indan as yellow oil (10.0 g, 94.3%). Recrystallization from hexane gave yellow prisms, m.p. 90°-92°.

Quelle