Multi-step reaction with 7 steps
1.1: sodium hydroxide; methanol / water / 4 h / 34 - 70 °C
1.2: 20 °C
2.1: sulfuric acid / methanol / 24 h / Reflux
3.1: bis[1,2-bis(diphenylphosphino)ferrocene]-palladium(0) / water; tetrahydrofuran / 3 h / 85 °C / Inert atmosphere
4.1: hydrogenchloride; sodium hydroxide / ethanol; water / 0.5 h / 90 °C
5.1: N-ethyl-N,N-diisopropylamine; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate / dichloromethane / 2 h / 20 °C
6.1: hydrogen / palladium 10% on activated carbon / tetrahydrofuran; methanol / 25 h / 20 °C / 750.08 Torr
7.1: N-ethyl-N,N-diisopropylamine; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate / dichloromethane / 1 h / 20 °C
7.2: 0.25 h / 110 °C / Microwave irradiation
With
hydrogenchloride; methanol; sulfuric acid; hydrogen; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine; sodium hydroxide;
bis[1,2-bis(diphenylphosphino)ferrocene]-palladium(0); palladium 10% on activated carbon;
In
tetrahydrofuran; methanol; ethanol; dichloromethane; water;