1: 1-phenyl-1-chlorotetramethyldisiloxane With lithium in tetrahydrofuran T=-78°C; Metallation; self-condensation; 2 h; 2: chloro-trimethyl-silane in tetrahydrofuran T=20°C; Substitution; 24 h; Further byproducts given;

1.1: 50 percent / pentane; diethyl ether / -78 °C 2.1: Li / tetrahydrofuran / 2 h / -78 °C 2.2: tetrahydrofuran / 24 h / 20 °C View Scheme

in diethyl ether; benzene T=20°C; Rate constantMechanism;