1: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 2: 120 mg / H2 / Pd-C / ethyl acetate 3: K2CO3 / acetone / 5 h / Heating View Scheme

1: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 2: 120 mg / H2 / Pd-C / ethyl acetate 3: K2CO3 / acetone / 5 h / Heating 4: AlCl3 / nitrobenzene / Ambient temperature View Scheme

1: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 2: 120 mg / H2 / Pd-C / ethyl acetate 3: AlCl3 / nitrobenzene / Ambient temperature View Scheme

1: 350 mg / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / dioxane / 10 h / Heating 2: 120 mg / H2 / Pd-C / ethyl acetate 3: AcONa / 1 h / Heating View Scheme