sodium hydride; oil 1.) THF, 1 h, 2.) THF, reflux, 20 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

sodium hydride 1.) THF, RT, 20 min, 2.) THF, RT, overnight; Yield given. Multistep reaction;

Yield given. Multistep reaction. Yields of byproduct given;