hydrogenchloride; methanol; acetyl chloride 4 h; Heating; Yield given. Yields of byproduct given;

Multi-step reaction with 4 steps 1: PhPOCl2 / 0.25 h / 100 °C2: 96 percent / LiAlH4 / tetrahydrofuran / 1.5 h / - 70 deg C up to r.t.3: Et3N, SO3*pyridine / dimethylsulfoxide / 1 h / 20 °C4: 1) potassium tert-butoxide / 1) THF, 10 deg C, 10 min, 2a) -78 up to -50 deg C, 1 h, 2b) -25 deg C, 30 min  

Multi-step reaction with 4 steps 1: PhPOCl2 / 0.25 h / 165 °C2: 96 percent / LiAlH4 / tetrahydrofuran / 1.5 h / - 70 deg C up to r.t.3: Et3N, SO3*pyridine / dimethylsulfoxide / 1 h / 20 °C4: 1) potassium tert-butoxide / 1) THF, 10 deg C, 10 min, 2a) -78 up to -50 deg C, 1 h, 2b) -25 deg C, 30 min  

Multi-step reaction with 5 steps 1: HOAc, iPrOH, H2O / 15 h / 100 °C2: PhPOCl2 / 0.25 h / 100 °C3: 96 percent / LiAlH4 / tetrahydrofuran / 1.5 h / - 70 deg C up to r.t.4: Et3N, SO3*pyridine / dimethylsulfoxide / 1 h / 20 °C5: 1) potassium tert-butoxide / 1) THF, 10 deg C, 10 min, 2a) -78 up to -50 deg C, 1 h, 2b) -25 deg C, 30 min