Thionyl Chloride → 6,7-Dimethoxy-2-naphthoyl chloride

Beteiligte Stoffe

Reaktionsschritte

To a solution containing 15.0 g. of 6,7-dimethoxy-2-naphthoic acid and one drop of dimethylformamide in 200 ml. of benzene was added 25 ml. of thionyl chloride. After heating one hour under reflux the mixture was evaporated to dryness in vacuo. Additional benzene was added and evaporation repeated to give 6,7-dimethoxy-2-naphthoyl chloride which was used directly in the preparation of 6,7-dimethoxy-2-naphthamide as described hereinabove in Example 113.

Herkunft & Nachweise