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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2387062Generated: November 2, 2026

Potassium Cyanide → (4-Bromo-2-ethyl-phenyl)-acetonitrile

https://huagongshe.com/reaction/2387062

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CyanideHCID 9032—
Reactant4-Bromo-1-(bromomethyl)-2-ethylbenzeneHCID 58764075—
SolventDiethyl EtherHCID 3283—
SolventN,N-Dimethylformamide--water (1/1)HCID 21962138—
Product(4-Bromo-2-ethyl-phenyl)-acetonitrileHCID 6708440481.9%

Reaction Conditions

Temperature45 °C

Reaction Steps

To a solution of 4-bromo-1-bromomethyl-2-ethyl-benzene (2.0 g, 7.25 mmol) in DMF/H2O (30 mL/6 mL) was added potassium cyanide (471 mg, 7.25 mmol). The reaction mixture was heated to 45° C. for 3 hours before it was cooled to room temperature. The mixture was diluted with Et2O and washed with H2O, brine and dried over MgSO4. The solvent was removed in vacuo to obtain the desired product (1.33 g, 80% yield). 1H NMR (300 MHz, CDCl3): δ 1.26 (t, J=7.5 Hz, 3 H), 2.60-2.67 (m, 2 H), 3.66 (s, 2H), 7.23-7.26 (m, 1H), 7.35-7.36 (m, 1 H), 7.38-7.40 (m, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08268835B2
Source datasetuspto-grants-2012_09
ORD IDord-cdd54b81913245ce8c480f1fd7096fda
Source noteuspto-grants-2012_09