1: triethylamine; copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride / N,N-dimethyl-formamide 2: tetrabutyl ammonium fluoride / acetonitrile 3: sodium hydroxide / ethanol View Scheme

sodium methylate in methanol 1 h; Ambient temperature;

sodium methylate in methanol T=20°C; 0.5 h;