1: silver perchlorate / acetone; H2O / 18 h / Ambient temperature 2: Jones' reagent 3: 55 percent / 85percent hydrazine hydrate, KOH / bis-(2-hydroxy-ethyl) ether / 4 h / Heating View Scheme

1: 65 percent / silver perchlorate, water / acetone / 18 h / Ambient temperature 2: 80 percent / Jones' reagent / acetone / 2 h / Ambient temperature 3: 55 percent / hydrazine hydrate, potassium hydroxide / bis-(2-hydroxy-ethyl) ether / 1.) reflux 1 h, 2.) remove water and excess hydrazine by distillation, reflux 3 h 4: boron trifluoride etherate / benzene / 18 h / Ambient temperature View Scheme