sodium ethanolate in ethanol T=110°C; 2 h;

n-butyllithium; diisopropylamine 1.) THF, hexane, -78 deg C, 30 min, 2.) THF, 0 deg C, 5.5 h; Yield given. Multistep reaction. Yields of byproduct given;

n-butyllithium; diisopropylamine 1.) THF, hexane, -78 deg C, 30 min, 2.) THF, 0 deg C, 5.5 h; Yield given. Multistep reaction. Yields of byproduct given;