反应详情

Under a nitrogen atmosphere, 64 mg of RuCl2 [(S)-DM-BINAP][(S)-DAIPEN], 720 mg of K2CO3, 100 mL of IPA, and g of α-ionone as a racemic form were mixed. After deaeration, the obtained mixture was subjected to an asymmetric hydrogenation at 30° C. and a hydrogen pressure of 3 MPa for 21 hours. The reaction pressure was returned to the constant pressure. It was confirmed by GC that the raw material disappeared, and a post-treatment was then carried out by a conventional method, to give 20.2 g of desired optically active α-ionol (100% yield; 90% e.e.; 0% d.e.).

1. customwas subjected to an asymmetric hydrogenation at 30° C.
2. customThe reaction pressure
3. customto give 20.2 g