Multi-step reaction with 2 steps 1: 33 mg / 10percent aq. KOH / methanol / 12 h / 60 °C2: 10 mg / 9percent HCl / 2 h / Heating  

Multi-step reaction with 6 steps 1: 8 mg / CrO3, pyridine / 1 h / 28 °C2: 6.7 g / NaBH4 / methanol / 0.33 h / 0 °C3: Hg(CN)2 / benzene; dioxane / 5 h / Heating4: 0.5percent NaOMe / methanol / 0.25 h / 24 °C5: 33 mg / 10percent aq. KOH / methanol / 12 h / 60 °C6: 10 mg / 9percent HCl / 2 h / Heating