Multi-step reaction with 8 steps
1.1: diethylamine / tetrahydrofuran / 20 h / Reflux
2.1: potassium carbonate / acetonitrile / 15 h / 80 °C
3.1: N,O-bis-(trimethylsilyl)-acetamide / 5 h / 70 °C
4.1: sodium hydroxide; water / tetrahydrofuran / 3 h / 20 °C
4.2: pH 1
5.1: hydrogen bromide; acetic acid / 1 h / 20 °C
6.1: sodium hydrogencarbonate / acetonitrile; water / 20 °C
7.1: N-ethyl-N,N-diisopropylamine; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate / N,N-dimethyl-formamide / 0.25 h / 20 °C
8.1: N-ethyl-N,N-diisopropylamine / tetra(n-butyl)ammonium hydrogensulfate; sodium iodide / toluene / 3 h / 120 °C / Inert atmosphere
With
N,O-bis-(trimethylsilyl)-acetamide; water; hydrogen bromide; sodium hydrogencarbonate; potassium carbonate; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; acetic acid; diethylamine; N-ethyl-N,N-diisopropylamine; sodium hydroxide;
tetra(n-butyl)ammonium hydrogensulfate; sodium iodide;
In
tetrahydrofuran; water; N,N-dimethyl-formamide; toluene; acetonitrile;