potassium hydroxide; 2,2,2-trichlorobenzo[d]-1,3,2λ5-dioxaphosphole 1.) CH2Cl2, -78 deg C, 1 h, then up to RT, 2.) EtOH, reflux, 18 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

phosphorus pentachloride in hexane 0.416667 h; Heatingvarious solvents, investigation of the ratio of isomers; Product distribution;

potassium hydroxide; water; hydrogen T=45°C; 24 h; Yield given. Yields of byproduct given;