1: 70 percent / K2CO3, KI / acetone; H2O / 24 h / Heating 2: 91 percent / N,N-diethylaniline / 3 h / 210 °C 3: 96 percent / 15 percent KOH-MeOH / 72 h / Heating 4: pyridine / Ambient temperature View Scheme

1: 96 percent / 15 percent KOH-MeOH / 72 h / Heating 2: pyridine / Ambient temperature View Scheme

pyridine Ambient temperature; Yield given;