1.1: tris(1,3-divinyl-1,1,3,3-tetramethyldisiloxane)-bis-platinum(0); tri-tert-butyl phosphine / tetrahydrofuran; xylenes / 1 h / 100 °C / Inert atmosphere 2.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.5 h / 20 °C / Inert atmosphere; Darkness 2.2: 1 h / 20 °C / Inert atmosphere; Darkness 3.1: chloro-trimethyl-silane; water / methanol / 0.17 h View Scheme

1.1: tris(1,3-divinyl-1,1,3,3-tetramethyldisiloxane)-bis-platinum(0); 1,1,3,3-tetramethyldisiloxane; tri-tert-butyl phosphine / tetrahydrofuran; xylenes / 1.08 h / Inert atmosphere 1.2: Inert atmosphere; Darkness 2.1: chloro-trimethyl-silane; water / methanol / 0.17 h View Scheme

1.1: n-butyllithium / hexanes; diethyl ether / 1.17 h / -78 °C / Inert atmosphere 1.2: 4 h / -78 - 20 °C / Inert atmosphere 2.1: Schwartz's reagent / tetrahydrofuran / 4 h / Inert atmosphere 2.2: 0.33 h / Inert atmosphere 3.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.5 h / 0 °C / Inert atmosphere; Darkness 3.2: 1 h / 20 °C / Inert atmosphere; Darkness 4.1: chloro-trimethyl-silane; water / methanol / 0.17 h 5.1: BaMnO4 / dichloromethane / 6 h / Inert atmosphere View Scheme

1: 1.) BuLi / 1.) THF, -70 deg C, 15 min, 2.) -70 deg C, 60 min; -70 deg C -> room temperature 2: hexane / 16 h 3: AcOH / H2O / 0.67 h / Heating 4: 95 percent / Et3N / CH2Cl2 / 1.) 0 deg C, 5 min, 2.) 0 deg C -> room temperature, 15 min 5: 95 percent / K2CO3, LiBr / acetone / 2.5 h / Heating View Scheme