trimethylsilyl trifluoromethanesulfonate in acetonitrile 45 h; Ambient temperature; Yield given. Yields of byproduct given;

sodium hydride 1.) CH3CN, RT, 30 min, 2.) CH3CN, 3 h; Multistep reaction. Yields of byproduct given;

ammonium sulfate; tin(IV) chloride; 1,1,1,3,3,3-hexamethyl-disilazane 1.) reflux, 4 h, 2.) acetonitrile, dichloroethane, RT, 18 h; Yield given. Multistep reaction. Yields of byproduct given;