NH4I; potassium fluoride; Cu(NO3)2*3H2O; oxygen T=140°C; 25 h; Schlenk technique;

1: 1,2-methylenedioxy-4-bromobenzene With magnesium in tetrahydrofuran T=75°C; 4 h; 2: ethyl orthosilicate in tetrahydrofuran T=20°C; 3 h;

N-ethyl-N,N-diisopropylamine; biphenyl-2-yl-di-tert-butyl-phosphane; bis(dibenzylideneacetone)-palladium(0) in 1-methyl-pyrrolidin-2-one T=60°C; 12 h;

1: benzo[d][1,3]dioxol-5-yl-diazonium tosylate With [RhCl(η2:η2-cycloocta-1,5-diene)]2; tetra-(n-butyl)ammonium iodide; triethylamine in N,N-dimethyl-formamide T=20°C; Sandmeyer reaction; 2 h; Inert atmosphere; 2: 4-bromooctafluorobutanetriethoxysilane in N,N-dimethyl-formamide T=20 - 100°C; Inert atmosphere;

1: 1,2-methylenedioxy-4-bromobenzene With n-butyllithium in diethyl ether; pentane T=20°C; 1 h; 2: ethyl orthosilicate in diethyl ether; pentane T=-78 - 20°C; 1 h;