1: 97 percent / 20 percent NaOH / ethanol / 5 h / Heating 2: 73 percent / ethanolamine / 5 h / 170 °C 3: 2.) 2,3-dichloro-5,6-dicyano-p-benzoquinone / 1.) MeCN, r.t., 14 h, 2.) MeCN, MeOH, r.t., 30 min View Scheme