反応 #10166

反応方程式

water

potassium carbonate

methyl 2-iodobenzoate

4-cyano-phenylboronic acid

→

methyl 4′-cyano-1,1′-biphenyl-2-carboxylate

収率 86.0%

溶媒

THF

反応条件

後処理

1. 1
   温度This mixture was heated
2. 2
   温度to reflux for 3.5 hours
3. 3
   その他The solvent was then removed under reduced pressure
4. 4
   抽出The organic layer was extracted with additional EtOAc
5. 5
   洗浄The combined organics were washed with water
6. 6
   乾燥The organics were then dried over sodium sulfate
7. 7
   ろ過filtered
8. 8
   濃縮concentrated
9. 9
   その他to obtain the crude product
10. 10
    洗浄eluting with 8:1 heptane

実験手順

To 500 mL of THF was added water (18.4 mL, 1.02 mol), potassium carbonate (70.5 g, 0.510 mol), methyl 2-iodobenzoate (53.5 g, 0.204 mol), 4-cyano-phenylboronic acid (30.0 g, 0.204 mol) and bis-(tri-o-tolylphosphine) palladium (II) chloride (1.65 g, 2.04 mmol). This mixture was heated to reflux for 3.5 hours and then cooled to ambient temperature for continued stirring overnight. The solvent was then removed under reduced pressure prior to dilution with EtOAc/water. The organic layer was extracted with additional EtOAc. The combined organics were washed with water, then brine. The organics were then dried over sodium sulfate, filtered, and then concentrated to obtain the crude product. This crude product was passed through a silica pad, eluting with 8:1 heptane:EtOAc to get 41.6 grams of methyl 4′-cyano-1,1′-biphenyl-2-carboxylate.

出典