Multi-step reaction with 8 steps
1.1: sulfuric acid / 1 h / Inert atmosphere; Reflux
2.1: caesium carbonate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; tert-butyl carbazate / tris(dibenzylideneacetone)dipalladium(0) chloroform complex / toluene / 90 °C / Inert atmosphere
2.2: 1 h / 20 °C / Inert atmosphere
3.1: sodium hydrogencarbonate / tetrahydrofuran / 2 h / 0 - 20 °C / Inert atmosphere
4.1: lithium hexamethyldisilazane / tetrahydrofuran / 1 h / -10 - 0 °C / Inert atmosphere
4.2: 1.33 h / 0 - 20 °C / Inert atmosphere
5.1: N-Bromosuccinimide / dichloromethane / 20 °C / Inert atmosphere
5.2: 72 h / 90 °C / Inert atmosphere
6.1: tri-n-butyl-tin hydride; acetic acid / bis-triphenylphosphine-palladium(II) chloride / dichloromethane / 1 h / 20 °C / Inert atmosphere
7.1: pyridine / dichloromethane / 20 °C / Inert atmosphere
8.1: cesium fluoride / dimethyl sulfoxide / 95 °C / Inert atmosphere; Microwave irradiation
With
pyridine; N-Bromosuccinimide; tert-butyl carbazate; sulfuric acid; tri-n-butyl-tin hydride; sodium hydrogencarbonate; caesium carbonate; acetic acid; cesium fluoride; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; lithium hexamethyldisilazane;
bis-triphenylphosphine-palladium(II) chloride; tris(dibenzylideneacetone)dipalladium(0) chloroform complex;
In
tetrahydrofuran; dichloromethane; dimethyl sulfoxide; toluene;