Reaktion #476351

Reaktionsgleichung

dibenzoyl-l-tartaric acid

isopropanol

(R,S)-nicotine

→

(R)-nicotine

Ausbeute 57.6%

Lösungsmittel

methanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturheated to reflux
2. 2
   TemperaturWhile refluxing

Vorschrift

A mixture of dibenzoyl-l-tartaric acid (58 g, 0.154 mol), 100 ml isopropanol and (R,S)-nicotine (25 g, 0.154 mol) was stirred for 1 hr and heated to reflux. While refluxing, 50 ml methanol was added and continued as in Example 1 to get (R)-nicotine (7.2 g, 57.6% yield) 99.85% GC, optical rotation: +141°, 99.9% chiral purity by HPLC.

Quelle