Multi-step reaction with 2 steps 1: sodium hydride / N,N-dimethyl-formamide; toluene; mineral oil / Inert atmosphere2: water; lithium hydroxide hydrate / 1,4-dioxane / 0.5 h  

Multi-step reaction with 5 steps 1.1: 0.5 h / |Reflux; |Inert atmosphere1.2: 10 h / |Reflux; |Inert atmosphere2.1: methanol / 0.5 h / 20 °C / |Reflux; |Inert atmosphere2.2: |Reflux; |Inert atmosphere3.1: thionyl chloride / 4 h / |Reflux; |Inert atmosphere4.1: AlCl3, aluminium chloride / chloroform / 10 h / |Reflux; |Inert atmosphere5.1: AlCl3, aluminium chloride / toluene / 1 h / 20 °C / |Reflux; |Inert atmosphere