Reaktion #6782

Reaktionsgleichung

4-carboxyindole

2-chloro-1-methylpyridinium iodide

4-phenethylpiperazine

ethyldi-isopropylamine

→

(1H-indol-4-yl)-(4-phenethylpiperazin-1-yl)methanone, hydrochloride

Ausbeute 100.1%

Lösungsmittel

acetone

N-methylpyrrolidone

NMP

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigethe crude product is obtained
2. 2
   Sonstigethe hydrochloride is precipitated
3. 3
   SonstigeAfter drying

Vorschrift

A solution of 2.0 g of 4-carboxyindole and 8.1 g of 2-chloro-1-methylpyridinium iodide in 60 ml of N-methylpyrrolidone (NMP) is treated with a solution of 2.36 g of 4-phenethylpiperazine and 8.2 g of ethyldi-isopropylamine (EDIPA) in 20 ml of NMP and subsequently stirred at room temperature for 3 hours. The mixture is worked up in the customary manner and the crude product is obtained. This is dissolved in acetone and the hydrochloride is precipitated using aqueous hydrochloric acid. After drying, 4.59 g of (1H-indol-4-yl)-(4-phenethylpiperazin-1-yl)methanone, hydrochloride, m.p. 289.3°, is obtained.

Quelle