Reaktion #351600

Reaktionsgleichung

(RS)-1-amino-2-propanol

(RS)-2-(2-oxoethyl)-6-isobutoxy-1-indanone

water

→

(RS)-1-(7-isobutoxy-1,4-dihydro-indeno[1,2-b]pyrrol-1-yl)-propan-2-ol

Ausbeute 57.0%

Lösungsmittel

toluene

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe cooled reaction mixture
2. 2
   Sonstigewas purified by column chromatography on silica gel (ethyl acetate/hexane 1:4)

Vorschrift

A solution of 2.3 g of (RS)-2-(2-oxoethyl)-6-isobutoxy-1-indanone and 70 mg of p-toluenesulfonic acid in 70 ml of anhydrous toluene was heated on a water separator. A solution of 2.93 g of (RS)-1-amino-2-propanol in 20 ml of anhydrous toluene was added dropwise to the boiling solution over a period of 5 minutes. Subsequently, the mixture was boiled for an additional 45 minutes, during which the solvent was reduced to a volume of 20 ml. The cooled reaction mixture was purified by column chromatography on silica gel (ethyl acetate/hexane 1:4). 1.52 g (57%) of (RS)-1-(7-isobutoxy-1,4-dihydro-indeno[1,2-b]pyrrol-1-yl)-propan-2-ol were obtained as a red oil.

Quelle