1: 1H-imidazole / dichloromethane / 3 h / 20 °C / |Inert atmosphere 2: tris-(dibenzylideneacetone)dipalladium(0); 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl; lithium tert-butylate / 1,4-dioxane / 110 °C / |Inert atmosphere 3: tetrabutyl ammonium fluoride / tetrahydrofuran View Scheme