Reaktion #169542

Reaktionsgleichung

NaBH4

ethyl 3-(4-chloro-3-fluorophenyl)-2-cyanoacrylate

→

ethyl 3-(4-chloro-3-fluorophenyl)-2-cyanopropanoate

Ausbeute 99.0%

Lösungsmittel

EtOH

EtOH

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigethe mixture was quenched with 0.1N HCl
2. 2
   Einengenconcentrated in vacuo
3. 3
   workup.ADDITIONdiluted with H2O
4. 4
   Extraktionextracted with DCM
5. 5
   Trocknendried over MgSO4
6. 6
   Einengenconcentrated

Vorschrift

A solution NaBH4 (15 mg, 0.39 mmol) in EtOH (4 mL) was cannulated into a mixture of the ethyl 3-(4-chloro-3-fluorophenyl)-2-cyanoacrylate (200 mg, 0.79 mmol) in EtOH (2 mL) at room temperature. After 5 minutes, the mixture was quenched with 0.1N HCl, concentrated in vacuo, diluted with H2O, extracted with DCM, dried over MgSO4, concentrated and subject to flash chromatography (SiO2 with DCM) to give ethyl 3-(4-chloro-3-fluorophenyl)-2-cyanopropanoate (0.20 g, 58%). LCMS (APCI+) [M+H]+254.3.

Quelle