反应详情

In a 1 L round-bottom flask was dissolved (E)-1-nitrohexa-1,5-diene (12.30 g, 97 mmol) and 2,3-difluorophenylboronic acid (38.2 g, 242 mmol) in dioxane (315 mL) to give a colorless suspension. Water (6.1 mL, 340 mmol) was added. The mixture was degassed with nitrogen and in a sonicator for 20 min. Sodium bicarbonate (4.06 g, 48.4 mmol) and (S)-(+2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (1.807 g, 2.90 mmol) and acetylacetonatobis(ethylene)rhodium (I) (0.749 g, 2.90 mmol) were added to the solution under nitrogen. The mixture was stirred at rt for 2 min, and then heated to 35° C. for 6 h under nitrogen. Reaction was continued for another 8 h at 35° C.

1. customto give a colorless suspension
2. customThe mixture was degassed with nitrogen and in a sonicator for 20 min
3. temperatureheated to 35° C. for 6 h under nitrogen
4. customReaction
5. waitwas continued for another 8 h at 35° C.