T=175°C; 1 h;

tris-(dibenzylideneacetone)dipalladium(0); potassium tert-butylate; 1,3-bis(2,6-diisopropylphenyl)imidazolinium chloride in 1,4-dioxane T=100°C; Inert atmosphere;

T=160°C; 6 h; Inert atmosphereNeat (no solvent);

1: triethylamine; trichlorophosphate / dichloromethane / 14 h / 0 - 23 °C 2: trimethylsilyl trifluoromethanesulfonate / acetonitrile; methanol / 0.25 h / 150 °C / |Microwave irradiation 3: hydrogenchloride / water; tetrahydrofuran / 50 °C View Scheme

1: trimethylsilyl trifluoromethanesulfonate / acetonitrile; methanol / 0.25 h / 150 °C / |Microwave irradiation 2: hydrogenchloride / water; tetrahydrofuran / 50 °C View Scheme