triphenylphosphine in chlorobenzene 1 h; Heating;

1: 300 mg / bis-(2-hydroxy-ethyl) ether / 1 h / 150 °C 2: 68 percent / triphenylphosphine / chlorobenzene / 1 h / Heating View Scheme

1.1: conc. sulfuric acid; aq. sodium nitrite / acetic acid / 0 °C 1.2: aq. sodium azide / 0.5 h / 20 °C 2.1: 300 mg / bis-(2-hydroxy-ethyl) ether / 1 h / 150 °C 3.1: 68 percent / triphenylphosphine / chlorobenzene / 1 h / Heating View Scheme