Multi-step reaction with 8 steps
1: boron trifluoride diethyl etherate / dichloromethane / 6 h / 0 - 20 °C
2: 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; pyridine hydrofluoride / dichloromethane / 3.5 h / -78 - 20 °C
3: water; sodium hydroxide / ethanol / 1 h / 0 - 20 °C
4: carbon tetrabromide; triphenylphosphine / dichloromethane / 1 h / 0 - 20 °C
5: N,N-dimethyl-formamide / 1.5 h / 60 °C
6: water; sodium hydroxide / ethanol / 1 h / 0 - 20 °C
7: caesium carbonate / N,N-dimethyl-formamide / 1 h / 90 °C / Sealed tube
8: water; sodium hydroxide / ethanol / 1 h / 80 °C
With
1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; carbon tetrabromide; pyridine hydrofluoride; boron trifluoride diethyl etherate; water; caesium carbonate; triphenylphosphine; sodium hydroxide;
In
ethanol; dichloromethane; N,N-dimethyl-formamide;