Figure 2. a – Ph₃P, CCl₄ / CH₃CN, 2°C, 2 h, NH₂(CH₂)₂OH, Et₃N / CH₃CN, 2°C→20̊С, 2 h; b – K₂CO₃ / MeOH - H₂O, Δ, 40 min; c – Ph₃P, CCl₄ / CH₃CN, Py, 2°C, 2 h, o-NH₂(C₆H₄)OH, Py / CH₃CN, +50°C, 3 h; d – (COCl)₂ / toluene, 2°C→20°С, 2 h; e – o-NH₂(C₆H₄)NH₂, Et₃N/ CH₂Cl₂, 2°C, 2 h; f – Al₂O₃, MW irradiation.