sec.-butyllithium; (-)-sparteine 1.) MTBE, cyclohexane, -78 deg C, 3.5 h, 2.) -78 deg C, 3 h; Yield given. Multistep reaction. Yields of byproduct given;

Yield given. Multistep reaction. Yields of byproduct given;

N,N,N',N,-tetramethylethylenediamine; sec.-butyllithium 1.) Et2O, cyclohexane, -78 deg C, 1 h, 2.) -78 deg C, 0.5 h; -78 deg C -> room temperature; room temperature, overnight; Yield given. Multistep reaction. Yields of byproduct given;

N,N,N',N,-tetramethylethylenediamine; sec.-butyllithium 1.) Et2O, cyclohexane, -78 deg C, 1 h, 2.) -78 deg C, 0.5 h; -78 deg C -> room temperature; room temperature, overnight; Yield given. Multistep reaction. Yields of byproduct given;

N,N,N',N,-tetramethylethylenediamine; sec.-butyllithium 1.) Et2O, cyclohexane, -78 deg C, 1 h, 2.) -78 deg C, 0.5 h; -78 deg C -> room temperature; room temperature, overnight; Yield given. Multistep reaction. Yields of byproduct given;

sec.-butyllithium; (-)-sparteine 1.) MTBE, cyclohexane, -78 deg C, 3.5 h, 2.) -78 deg C, 3 h; Yield given. Multistep reaction. Yields of byproduct given;