1: bis(phenylethynyl)dimethylsilane With Li-naphthalenide in tetrahydrofuran T=20°C; Cyclization; Metallation; 0.166667 h; 2: With zinc(II) chloride−TMEDA; triphenyl-silyl chloride in tetrahydrofuran T=-78 - 20°C; Substitution; 1.5 h; 3: bromobenzene With bis-triphenylphosphine-palladium(II) chloride in tetrahydrofuran Arylation; 12 h; Heating; Further stages.;

1: diphenyl acetylene With lithium in tetrahydrofuran T=20°C; 2 h; 2: dimethyl-dichlorosilane in tetrahydrofuran 5 h; Heating;

1: 1-chloro-1,2,3,4,5-pentaphenyl-1-silacyclopentadiene With lithium in tetrahydrofuran T=20°C; 2 h; 2: methyl iodide in tetrahydrofuran T=-78 - 20°C;

methanol; methylene blue in dichloromethane Irradiation;

Ni(PEt3)2Cl2 in toluene Heating;

bis(bicyclo[2.2.1]hepta-2,5-diene)dichlorodirhodium; bicyclo[2.2.1]hepta-2,5-diene in tetrahydrofuran T=50°C; 4 h;

1: 1-chloro-1,2,3,4,5-pentaphenyl-1-silacyclopentadiene With lithium in tetrahydrofuran T=-78 - 20°C; 2: methyl iodide in tetrahydrofuran T=-78 - 20°C;

tri-ruthenium(0)dodecacarbonyl in toluene T=110°C; Cycloaddition; 5 h;

tri-ruthenium(0)dodecacarbonyl in toluene T=110°C; Cycloaddition; 5 h;

2 h; Ambient temperature;