反应详情

In a 100 ml autoclave were charged 20.0 g (84.7 mmol) of ethyl 4-benzyloxy-3-oxobutyrate, 16 ml of ethanol, and 31 mg (0.034 mmol) of Ru2Cl4((R)-Tol-BINAP)2.NEt3, and asymmetric hydrogenation was performed at 100° C. under a hydrogen pressure of 10 torr for 3 hours (conversion: 100%). The solvent was evaporated under reduced pressure to give 18.0 g of the title compound as liquid.

1. customwas performed at 100° C. under a hydrogen
2. customfor 3 hours
3. customThe solvent was evaporated under reduced pressure