1,4-diaza-bicyclo[2.2.2]octane; [RhCl(η2:η2-cycloocta-1,5-diene)]2 in 1,4-dioxane; water T=100°C; 15 h; oilbathInert atmosphere;

Stage #1: With  n-butyllithium; tri-isopropoxy-borane in  tetrahydrofuran; toluene T=-78 - 20°C;  Inert atmosphere; Stage #2: With  hydrogenchloride in  water T=0°C;