Multi-step reaction with 7 steps
1.1: potassium tert-butylate / tetrahydrofuran / 2 h / 0 - 20 °C / Inert atmosphere
1.2: pH 1
2.1: potassium iodide; sodium hydrogencarbonate; iodine / dichloromethane; water / 48 h
3.1: tris-(trimethylsilyl)silane / 2,2'-azobis(isobutyronitrile) / toluene / 1.5 h / 90 °C
4.1: potassium carbonate / N,N-dimethyl-formamide / 16 h / Inert atmosphere
5.1: di-isopropyl azodicarboxylate / tetrahydrofuran / 16 h / 20 °C / Inert atmosphere
6.1: lithium hydroxide / water; tetrahydrofuran / 4 h / 20 °C
6.2: pH 2
7.1: N-ethyl-N,N-diisopropylamine; O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate / N,N-dimethyl-formamide / 0 - 20 °C / Inert atmosphere
With
di-isopropyl azodicarboxylate; tris-(trimethylsilyl)silane; O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate; potassium tert-butylate; iodine; sodium hydrogencarbonate; potassium carbonate; N-ethyl-N,N-diisopropylamine; potassium iodide; lithium hydroxide;
2,2'-azobis(isobutyronitrile);
In
tetrahydrofuran; dichloromethane; water; N,N-dimethyl-formamide; toluene;