1: 58 percent / sodium hydroxide, acetic acid / H2O / 2 h 2: 1.) n-butyl lithium / 1.) THF, 0 deg C, 10 min, 2.) THF, -78 deg C to 25 deg C, 3 h; 25 deg C, 18 h View Scheme

n-butyllithium 1.) THF, 0 deg C, 10 min, 2.) THF, -78 deg C to 25 deg C, 3 h; 25 deg C, 18 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;