反应详情

N-(4-Chloro-phenyl)-2,2-dimethyl-propionamide (3.0, 14.2 mmol) was dissolved in 15 mL THF in a dry 100 mL flask fitted with a rubber septa and nitrogen inlet and cooled to 0° C. in ice water bath for 25 minutes. A solution of 2.5M BuLi in hexane (17.0 mL, 42.6 mmol) was added and the mixture stirred for 45 minutes. To the thick yellow precipitate that formed was added a solution of pyridine-3-carboxaldehyde (3.03 g, 28.4 mmol) in 15 mL THF. The ice bath was removed and the mixture was allowed to stir at room temperature for 45 minutes and the reaction was quenched with 25 mL H2O. The mixture was transferred to a separating funnel, and the aqueous phase was discarded. The organics were dried in vacuo to yield product as an orange oil. 1H NMR (CDCl3) δ 8.85 (m, 1H) 8.54 (m, 1H) 8.42 (m, 1H) 8.10 (dd, J=8.8 Hz, 2.8 Hz, 1H) 7.50 (d, J=8.0 Hz, 1H) 7.31 (m, 1H) 7.23 (m, 1H) 7.10 (m, 1H) 5.85 (m, 1H) 1.70 (d, 1H) 1.08 (s, 9H); MS (ES) m/z=319.1 (MH)+

1. customfitted with a rubber septa and nitrogen inlet
2. customTo the thick yellow precipitate that formed
3. customThe ice bath was removed
4. stirringto stir at room temperature for 45 minutes
5. customthe reaction was quenched with 25 mL H2O
6. customThe mixture was transferred to a separating funnel
7. customThe organics were dried in vacuo
8. customto yield product as an orange oil