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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 845175Generated: October 30, 2026

Chlorodifluoromethane → 2,3-Dichloro-5-(difluoromethoxy)pyridine

https://huagongshe.com/reaction/845175

Reaction equation

Participants

RoleNameHCIDCharge
ReactantChlorodifluoromethaneHCID 6372—
ReactantSodium HydroxideHCID 14798—
Reactant2,3-Dichloro-5-hydroxypyridineHCID 14391672—
SolventWaterHCID 962—
Solvent1,4-DioxaneHCID 31275—
Product2,3-Dichloro-5-(difluoromethoxy)pyridineHCID 14556197—

Reaction Steps

Chlorodifluoromethane was passed at 50° C. into a mixture of 32.8 g (0.2 mol) of 5,6-dichloro-3-pyridinol in 200 ml of 1,4-dioxane and 40 g (1 mol) of sodium hydroxide in 100 ml of water until starting material was no longer present. The further procedure was then carried out as described in Example 1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04756739
Source datasetuspto-grants-1988_07
ORD IDord-3076207293af4a759c59a9a9806766ae
Source noteuspto-grants-1988_07