tert.-butyl lithium 1.) THF, pentane, -78 deg C, 2 h; room temperature, 1.5 h, 2.) 2 h; Yield given. Multistep reaction. Yields of byproduct given;

N,N,N',N',N'',N''-hexamethylphosphoric triamide; sec.-butyllithium 1.) THF, pentane, -78 deg C, 2 h; room temperature, 1.5 h, 2.) 2 h; Yield given. Multistep reaction;