HCID 18706394, Verbindung → HCID 18706508, Verbindung

Reaktionsgleichung

[Cl:1][C:2]1[CH:11]=[C:10]2[C:5]([N:6]=[C:7]([O:14][CH3:15])[C:8]([O:12][CH3:13])=[N:9]2)=[C:4]([C:16]#[C:17][CH2:18][OH:19])[CH:3]=1.[H][H]>O1CCCC1.[Ni]>[Cl:1][C:2]1[CH:11]=[C:10]2[C:5]([N:6]=[C:7]([O:14][CH3:15])[C:8]([O:12][CH3:13])=[N:9]2)=[C:4]([CH2:16][CH2:17][CH2:18][OH:19])[CH:3]=1

Komponenten

Versuchsvorschrift

2.05 g (7.36 mmol) of 3-(7-chloro-2,3-dimethoxy-quinoxalin-5-yl)-prop-2-yn-1-ol are hydrogenated at normal pressure in 20 ml of tetrahydrofuran with approximately 0.4 g of Raney nickel until twice the molar amount of hydrogen has been absorbed. The hydrogenated mixture is filtered with suction over a glass fiber filter and the filtrate is concentrated. 2.04 g (98%) of 3-(7-chloro-2,3-dimethoxy-quinoxalin-5-yl)-propan-1-ol are obtained in the form of beige crystals having a melting point of 104-105° C.