trifluoroacetic acid in benzene 24 h; Ambient temperature;

1: 81 percent / diisopropylamine, n-butyllithium / tetrahydrofuran / -78 °C 2: 1) chlorotrimethylsilane, sodium iodide 2) water / 1) acetonitrile a) 1h 40 deg C b) 1.5h room temperature 2) 2h room temperature View Scheme

chloro-trimethyl-silane; water; sodium iodide 1) acetonitrile a) 1h 40 deg C b) 1.5h room temperature 2) 2h room temperature; Yield given. Multistep reaction;