1: 82 percent / pyridine; toluene / 7.5 h / 60 - 70 °C 2: 1.) POCl3, P2O5, 2.) NaBH4, 5M NaOH / 1.) toluene, reflux 4 h, 2.) ethanol View Scheme

1: 82 percent / pyridine; toluene / 7.5 h / 60 - 70 °C 2: 1.) POCl3, P2O5, 2.) NaBH4, 5M NaOH / 1.) toluene, reflux 4 h, 2.) ethanol View Scheme

sodium hydroxide; sodium tetrahydroborate; phosphorus pentoxide; trichlorophosphate 1.) toluene, reflux 4 h, 2.) ethanol; Yield given. Multistep reaction;