TiCl2(OPri)2; chloranil 1) CH2Cl2, -50 deg C, 17 h, 2) m-xylene, 140 deg C, 24 h; Yield given. Multistep reaction. Title compound not separated from byproducts;

oxygen; chloranil 1.) CH2Cl2, RT, 4 d, 2.) xylene, 140 deg C; Yield given. Multistep reaction. Yields of byproduct given;