1: platinum(IV) oxide; hydrogen / ethanol / 1 h / 760.05 Torr 2: palladium diacetate; caesium carbonate; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene / 1,4-dioxane / 4 h / 85 °C / Inert atmosphere 3: methoxybenzene; trifluoroacetic acid / dichloromethane / 24 h / 25 - 40 °C View Scheme

1: potassium carbonate; sodium iodide / butanone / 16 h / 80 °C 2: platinum(IV) oxide; hydrogen / ethanol / 1 h / 760.05 Torr 3: palladium diacetate; caesium carbonate; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene / 1,4-dioxane / 4 h / 85 °C / Inert atmosphere 4: methoxybenzene; trifluoroacetic acid / dichloromethane / 24 h / 25 - 40 °C View Scheme

1: palladium diacetate; caesium carbonate; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene / 1,4-dioxane / 4 h / 85 °C / Inert atmosphere 2: methoxybenzene; trifluoroacetic acid / dichloromethane / 24 h / 25 - 40 °C View Scheme

T=140°C;

T=175°C;