1: acetic acid; iron / ethanol / 0.08 h / 20 °C / |Reflux 2: sulfuric acid / 24 h / |Reflux 3: potassium carbonate; 1,4-diaza-bicyclo[2.2.2]octane; copper(l) iodide / 1,4-dioxane / 3 h / |Schlenk technique; |Inert atmosphere; |Reflux View Scheme

1.1: bromo-dimethylsulfonium bromide / dichloromethane / 1 h / 20 °C / |Inert atmosphere 1.2: -78 - 20 °C / |Inert atmosphere 2.1: acetic acid; iron / ethanol / 0.08 h / 20 °C / |Reflux 3.1: sulfuric acid / 24 h / |Reflux 4.1: potassium carbonate; 1,4-diaza-bicyclo[2.2.2]octane; copper(l) iodide / 1,4-dioxane / 3 h / |Schlenk technique; |Inert atmosphere; |Reflux View Scheme