反应详情

温度

50 °C

In a dry and argon-flushed Schlenk-flask, equipped with a magnetic stirring bar and a septum, (2-cyanoethyl)zinc pivalate (1t) (2.35 g, 2150 mg/mmol, 1.09 mmol) was dissolved in a mixture of THF (3.0 mL) and NMP (1.0 mL). 4-Bromobenzonitrile (168 mg, 0.92 mmol) was added followed by PEPPSI-iPr (14 mg, 0.02 mmol) and the mixture was stirred for 12 h at 50° C. Then sat. aq. NH4Cl (10 mL) was added and the aqueous layer was extracted with EtOAc (3×20 mL). The combined organic phases were dried (Na2SO4). Evaporation of the solvents in vacuo and purification by flash chromatography (silica gel, ihexane/Et2O=3:1) afforded 4-(2-cyanoethyl)benzonitrile (entry 26) (113 mg, 80%) as a pale yellow oil.

1. customIn a dry
2. customargon-flushed Schlenk-flask
3. customequipped with a magnetic stirring bar
4. extractionthe aqueous layer was extracted with EtOAc (3×20 mL)
5. dry with materialThe combined organic phases were dried (Na2SO4)
6. customEvaporation of the solvents
7. customin vacuo and purification by flash chromatography (silica gel, ihexane/Et2O=3:1)