反应详情

A 500 ml autoclave was charged in a glove box (O2 content <1 ppm) with 24.0 g (155.6 mmol) of geraniol [(E)-3,7-dimethyl-2,6-octadien-1-ol], 1200 ml of methanol and 2.9 mg of Ru[(R)-MeOBIPHEP](CF3COO)2 as the catalyst. The hydrogenation was effected at 20° C. and 60 bar. The conversion after 6 hours amounted to 99.9%. The hydrogenation solution was evaporated at 45° C./17 mbar and the crude product was distilled at 60°-65° C./0.03 mbar. There were obtained 23.7 g of (S)-citronellol [(S)-3,7-dimethyl-6-octen-1-ol] as a colourless oil; e.e. 98.9%.

1. customwas effected at 20° C.
2. customThe hydrogenation solution was evaporated at 45° C./17 mbar
3. distillationthe crude product was distilled at 60°-65° C./0.03 mbar