1: 2-hydroxy-5-bromotoluene With n-butyllithium in tetrahydrofuran; hexanes T=-78°C; 0.5 h; 2: chloro-trimethyl-silane in tetrahydrofuran; hexanes T=-78°C; 1.5 h;

1: With tetrabutyl ammonium fluoride in tetrahydrofuran T=20°C; 0.0833333 h; 2: With water in tetrahydrofuran T=20°C;