1: 55 percent / NaNO2; phloroglucinol; urea / dimethylformamide / 48 h 2: 96 percent / NaOMe / tetrahydrofuran / 4 h / Heating 3: 92 percent / DMAP / CH2Cl2 / 20 °C 4: 90 percent / TMSOTf; 2,6-lutidine / CH2Cl2 / 20 °C 5: 90 percent / tributyltin hydride; AIBN / benzene / 20 h / Heating View Scheme