RbF in acetonitrile T=80°C; 0.5 h;

in toluene Acetylation; 72 h; Heating; Title compound not separated from byproducts;

diisobutylaluminium hydride 1.) toluene, reflux, 3 h, 2.) toluene, from 0 deg C to RT; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;