tris(triphenylphosphine)ruthenium(II) chloride; sodium acetate; benzaldehyde in 1,2-dichloro-ethane T=90°C; 4 h; Schlenk techniqueInert atmosphere;

phosphoric acid; water in hexane T=0 - 20°C;

1: tris(ethoxyvinyl)borane With diethylzinc in toluene T=-78°C; 0.333333 h; Inert atmosphere; 2: 3,3-dimethyl-butan-2-one in toluene T=-78 - 20°C; 14 h; Inert atmosphere; 3: With hydrogenchloride; water in diethyl ether; toluene T=0°C; pH=> 4; Inert atmosphere; optical yield given as percent de;

1.1: sodium hydride / mineral oil; tetrahydrofuran / 0.5 h / 0 °C / |Inert atmosphere 1.2: |Inert atmosphere; |Reflux 2.1: diisobutylaluminium hydride / tetrahydrofuran; toluene / -78 - 0 °C / |Inert atmosphere 3.1: benzaldehyde; tris(triphenylphosphine)ruthenium(II) chloride; sodium acetate / 1,2-dichloro-ethane / 4 h / 90 °C / |Schlenk technique; |Inert atmosphere View Scheme