1: 2-(2'-bromophenyl)-6-butyl[1,3,6,2]dioxazaborocan With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.5 h; 2: acetone in tetrahydrofuran; hexane T=-78 - 20°C; 0.5 h; 3: With hydrogenchloride in tetrahydrofuran; hexane; water T=20°C; 0.5 h; Product distribution / selectivity;

1: 2-(2'-bromophenyl)-6-butyl[1,3,6,2]dioxazaborocan With n-butyllithium in tetrahydrofuran T=-90 - -75°C; 0.333333 h; 2: boric acid trimethyl ester T=-85°C; 0.333333 h; 3: With hydrogenchloride in water T=-30°C;