反应详情

温度

90 °C

A mixture of 2-chloroquinoline-3-carbaldehyde (5.0 g, 26.1 mmol), Na2CO3 (4.15 g, 39.1 mmol) and diethyl(3-pyridyl)borane (4.22 g, 28.7 mmol) in DME (100 mL) and water (30 mL) was degassed by bubbling nitrogen gas through it for 5 minutes. Tetrakis-(triphenylphosphine)palladium(0) (0.30 g, 0.261 mmol) was added and the mixture was heated at 90° C. for 5 h. The mixture was allowed to cool to room temperature. The resultant precipitate was filtered off and washed with water (5×50 mL) and diethyl ether (5×50 mL) to give the title compound (4.3 g, 70%) as a pale green solid. LCMS (ES+) 235 (M+H)+, RT 1.53 minutes.

1. customwas degassed
2. customby bubbling nitrogen gas through it for 5 minutes
3. temperatureto cool to room temperature
4. filtrationThe resultant precipitate was filtered off
5. washwashed with water (5×50 mL) and diethyl ether (5×50 mL)