1: 78 percent / ethanolamine / 5 h / 170 °C 2: acetonitrile / 1 h / Ambient temperature 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