ethanol; sodium in diethyl ether 0 deg C, 30 min, reflux, 4 h;

sodium ethanolate 1.) ether, 30 min, 2.) ether, reflux, 3 h; Multistep reaction;

ethanol; sodium in diethyl ether 0 deg C, 30 min, reflux, 4 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;