1: para-iodoanisole With [2,2']bipyridinyl; Pd2(dpa)3 in benzene T=50°C; 3 h; 2: carbon monoxide; 1-(2-hydroxyphenyl)-2-phenylacetylene With potassium carbonate in acetonitrile; benzene T=50°C; 12 h; Further stages.;

1: 100 percent / HCl (gas) / ethyl acetate; ethanol / 1.) 0 deg C, 15 min, 2.) overnight 2: 75 percent / conc. H2SO4, 30 percent H2O2 / methanol / 0 °C 3: 80 percent / KOH / aq. ethanol / 10 h / Heating 4: 25 percent / aq. HCl, HOAc / 10 h / Heating View Scheme

1: 80 percent / KOH / aq. ethanol / 10 h / Heating 2: 25 percent / aq. HCl, HOAc / 10 h / Heating View Scheme

1: 75 percent / conc. H2SO4, 30 percent H2O2 / methanol / 0 °C 2: 80 percent / KOH / aq. ethanol / 10 h / Heating 3: 25 percent / aq. HCl, HOAc / 10 h / Heating View Scheme

1: 100 percent / HCl (gas) / ethyl acetate; ethanol / 1.) 0 deg C, 15 min, 2.) overnight 2: 75 percent / conc. H2SO4, 30 percent H2O2 / methanol / 0 °C 3: 80 percent / KOH / aq. ethanol / 10 h / Heating 4: 25 percent / aq. HCl, HOAc / 10 h / Heating View Scheme

hydrogenchloride; acetic acid 10 h; Heating;

pyridine hydrochloride T=200°C; 2 h;