1.1: phenyllithium / diethyl ether / 0.5 h / Heating 1.2: diethyl ether / 1.5 h / Heating 2.1: 20.2 g / aq. HCl / diethyl ether / 1.5 h / Heating 3.1: 74 percent / KOH / ethanol / 0.5 h / 60 °C 4.1: ethane-1,2-diol / 0.5 h / 200 °C View Scheme

in ethylene glycol T=200°C; 0.5 h;

1.1: phenyllithium / diethyl ether / 0.5 h / Heating 1.2: diethyl ether / 1.5 h / Heating 2.1: 20.2 g / aq. HCl / diethyl ether / 1.5 h / Heating 3.1: 74 percent / KOH / ethanol / 0.5 h / 60 °C 4.1: ethane-1,2-diol / 0.5 h / 200 °C View Scheme

1: 74 percent / KOH / ethanol / 0.5 h / 60 °C 2: ethane-1,2-diol / 0.5 h / 200 °C View Scheme

1: 74 percent / KOH / ethanol / 0.5 h / 60 °C 2: ethane-1,2-diol / 0.5 h / 200 °C View Scheme

tetra(n-butyl)ammonium hydroxide in tert-butyl alcohol T=80°C; Knoevenagel reaction;