lithium diisopropyl amide 1.) THF, -40 deg C -> room temperature; 65 deg C, 1 h, 2.) 65 deg C, 1 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

peracetic acid; diethyl ether; boron trifluoride; lithium diisopropyl amide Yield given. Multistep reaction. Yields of byproduct given;

n-butyllithium 1.) THF, reflux, 1 h, 2.) -78 deg C, 2.5 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;