反应详情

温度

50 °C

Chlorocyclooctadiene rhodium(I) dimer (0.802 g, 1.63 mmol, 3.25 mmol of Rh), Josiphos SL-J216-2 (2.199 g, 3.42 mmol), and N-(1-benzyl-7-methoxy-3,4-dihydronaphthalen-2-yl)propionamide (440 g, 1.37 mol) were combined in a metal reactor, and the vessel was inerted with argon. Degassed methanol (4.40 I) was added, then the mixture was stirred under argon at 50° C. for 20 min. The vessel was pressurized with 60 psig of hydrogen and stirred at 55° C. for 40 hrs. HPLC analysis indicated complete conversion and 95.9% ee. The methanol solution of crude reduction product was concentrated and triturated with heptane to yield 428.2 g (yield: 91%) of the title compound.

1. stirringstirred at 55° C. for 40 hrs
2. concentrationThe methanol solution of crude reduction product was concentrated
3. customtriturated with heptane