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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 474193Generated: October 29, 2026

Water → Pyridine, 5-bromo-2-(3,4-dichlorophenoxy)-

https://huagongshe.com/reaction/474193

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant3,4-DichlorophenolHCID 7258—
ReactantPotassium CarbonateHCID 11430—
Reactant2,5-DibromopyridineHCID 69353—
SolventDimethylformamideHCID 6228—
ProductPyridine, 5-bromo-2-(3,4-dichlorophenoxy)-HCID 514889100%

Reaction Conditions

Temperature90 °C

Reaction Steps

To a solution of 2,5-dibromopyridine (2.412 g, 10.18 mmol) in DMF (50 mL) was added K2CO3 (5.22 g, 37.8 mmol) and 3,4-dichlorophenol (2.66 g, 16.3 mmol). The mixture was heated at 90° C. for 18 h then allowed to cool to room temperature (rt). Water was added and the mixture was extracted with DCM. Purification by FCC provided the desired product (3.23 g, 100%). 1H NMR (400 MHz, CDCl3): 8.21 (dd, J=2.5, 0.8 Hz, 1H), 7.81 (dd, J=8.3, 3.0 Hz, 1H), 7.45 (d, J=8.8 Hz, 1H), 7.26 (d, J=1.5 Hz, 1H), 7.00 (dd, J=9.0, 2.5 Hz, 1H), 6.88 (dd, J=8.8, 0.8 Hz, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08637520B2
Source datasetuspto-grants-2014_01
ORD IDord-a83725eee48b4087a809c8b159898b04
Source noteuspto-grants-2014_01