1: 1.) potassium tert-butoxide 2.) H2O, citric acid, Na2HPO4, Fremy's salt (K2ON(SO3)2) / 1.) ethanol, reflux, 3 h, 2.) RT, overnight 2: 93 percent / sodium dithionite / H2O; dioxane / 0.5 h / Ambient temperature 3: 77 percent / K2CO3, potassium tert-butoxide / dimethylformamide; tetrahydrofuran / Ambient temperature 4: 88 percent / sodium acetate, H2 / 10percent Pd/C / benzene; acetic anhydride / 24 h 5: 65 percent / pyridine / 12 h 6: 48 mg / N-bromosuccinimide (NBS), benzoyl peroxide / CCl4 / 0.33 h / Heating 7: 34 mg / LiBr, Li2CO3, hydroquinone / dimethylformamide / 110 °C 8: sodium methoxide / methanol View Scheme