tetrachlorosilane; zinc(II) chloride in dichloromethane T=25°C; 6 h;

sodium ethanolate in ethanol

sodium ethanolate; ethyl acetate

1.1: dichloro(cycloocta-1,5-diene)palladium(II); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; magnesium chloride; triethylamine / 1,4-dioxane / 80 °C / |Glovebox; |Inert atmosphere 1.2: 80 °C / |Glovebox; |Inert atmosphere 1.3: 18 h / 80 °C 2.1: hydrogenchloride / water / 1 h / 80 °C View Scheme

sodium hydroxide 1.) MeOH, 1h, r.t.; 2.) EtOH, 30 min, reflux; Multistep reaction;

sodium hydroxide 1.) MeOH, 1h, r.t.; 2.) EtOH, 30 min, reflux; Yield given. Multistep reaction. Yields of byproduct given;

(i) B2O3, CaF2, SO3/H2SO4, (ii) aq. NaOAc; Multistep reaction;