1: With sodium hydride in toluene T=40°C; Metallation; 0.25 h; 2: With copper(l) chloride in ethyl acetate; toluene Cyclization; Ullman reaction; 24 h; Heating;

1: With sodium hydride in pyridine T=40°C; Metallation; 0.25 h; 2: With copper(l) chloride in pyridine Cyclization; Ullman reaction; 2 h; Heating;

tri-tert-butyl phosphine; cesium fluoride; tris(dibenzylideneacetone)dipalladium (0) in 1,4-dioxane Alkylation; 48 h; Heating;