1: With sulfuric acid; m-nitrobenzene sulfonic acid sodium salt 5 h; Heating / reflux; 2: With sodium hydroxide in diethyl ether

1: With tetrafluoroboric acid; sodium nitrite in water T=0°C; 0.5 h; 2: in toluene 32 h; Heating;

1.1: 89 percent / nitric acid; sulfuric acid / 48 h / 0 °C 2.1: 79 percent / hydrochloric acid; tin(II) chloride / 48 h / 20 °C 3.1: sodium nitrite; fluoroboric acid / H2O / 0.5 h / 0 °C 3.2: 48 percent / toluene / 32 h / Heating View Scheme

1.1: 79 percent / hydrochloric acid; tin(II) chloride / 48 h / 20 °C 2.1: sodium nitrite; fluoroboric acid / H2O / 0.5 h / 0 °C 2.2: 48 percent / toluene / 32 h / Heating View Scheme

sulfuric acid; fluorine T=0 - 5°C;

N-bromosuccinmide; dibenzoyl peroxide in tetrachloromethane 4 h; Irradiation;