Multi-step reaction with 7 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: potassium carbonate / acetone / 16 h / 80 °C
6: water; potassium carbonate / ethanol / 16 h / 20 °C
7: O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; 4-methyl-morpholine / N,N-dimethyl-formamide / 3 h / 0 - 20 °C
With
4-methyl-morpholine; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; carbon tetrabromide; pyridine hydrofluoride; boron trifluoride diethyl etherate; water; potassium carbonate; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; triphenylphosphine; sodium hydroxide;
In
ethanol; dichloromethane; N,N-dimethyl-formamide; acetone;