反応 #1497738

反応方程式

DMF

2-chloro-6-methoxy-3-methylquinoline

4-(methoxycarbonyl)phenylboronic acid

→

methyl 4-(6-methoxy-3-methylquinolin-2-yl)benzoate

収率 25.0%

溶媒

water

反応条件

後処理

1. 1
   抽出extracted with EtOAc (25 mL×2)
2. 2
   洗浄The organics were washed with brine (50 mL)
3. 3
   乾燥dried over sodium sulfate
4. 4
   濃縮concentrated
5. 5
   その他to yield 250 mg of crude material
6. 6
   その他The crude was purified via column chromatography with a gradient of 5% EtOAc in hexanes to 80% EtOAc in hexanes

実験手順

To a mixture of 2-chloro-6-methoxy-3-methylquinoline (100 mg, 0.482 mmol), 4-(methoxycarbonyl)phenylboronic acid (184 mg, 1.02 mmol), TEA (0.35 mL, 2.41 mmol), and PdCl2(dppf) (35 mg, 0.048 mmol) was added 2 mL of DMF under argon. The mixture was then stirred for 2.5 h at 120° C. in a microwave reactor. The crude mixture was then diluted with water (25 mL) and extracted with EtOAc (25 mL×2). The organics were washed with brine (50 mL), dried over sodium sulfate, and concentrated to yield 250 mg of crude material. The crude was purified via column chromatography with a gradient of 5% EtOAc in hexanes to 80% EtOAc in hexanes to yield 37 mg (25% yield) of methyl 4-(6-methoxy-3-methylquinolin-2-yl)benzoate.

出典