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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 858619Generated: October 30, 2026

Potassium Cyanide → 2-(4-Bromo-2-fluorophenyl)acetonitrile

https://huagongshe.com/reaction/858619

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CyanideHCID 9032—
Reactant4-Bromo-2-fluorobenzyl bromideHCID 2733660—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
Product2-(4-Bromo-2-fluorophenyl)acetonitrileHCID 717230887.4%

Reaction Conditions

Temperature40 °C

Reaction Steps

To a solution of 4-bromo-1-(bromomethyl)-2-fluorobenzene (5.0 g, 18.7 mmol) in DMF (80 mL) and H2O (8 mL) was added KCN (1.21 g, 18.7 mmol). The mixture was heated to 40° C. for 3 hours before it was cooled down to room temperature. The reaction was diluted with H2O (40 mL) and extracted with Et2O (3×100 mL). The combined organic layers were washed with brine and dried over Na2SO4. The solvent was removed and the residue was purified by flash column chromatography (0–15% EtOAc in hexanes) to give the product (3.5 g, 87% yield). 1H NMR (300 MHz, CDCl3) δ: 3.72 (s, 2 H), 7.26–7.35 (m, 3 H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07148226B2
Source datasetuspto-grants-2006_12
ORD IDord-3077ebc5686d4589b7329f2d28623f87
Source noteuspto-grants-2006_12