tetrabutyl ammonium fluoride; 2,3-dicyano-5,6-dichloro-p-benzoquinone 1) MeOH, r.t., 16 h, 2) CH2Cl2, r.t., 8 h.; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

tetrabutyl ammonium fluoride; 2,3-dicyano-5,6-dichloro-p-benzoquinone 1) MeOH, r.t., 16 h, 2) CH2Cl2, r.t., 8 h.; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;