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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 637796Generated: October 30, 2026

3,4-Dichlorophenol → 5-(3,4-Dichlorophenoxy)-2-ethylthio-4-pyridinecarbonitrile

https://huagongshe.com/reaction/637796

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3,4-DichlorophenolHCID 7258—
Reactant5-Chloro-2-ethylthio-4-pyridinecarbonitrileHCID 13560212—
ReactantPotassium tert-butoxideHCID 23665647—
SolventDimethyl SulfoxideHCID 679—
SolventTetrahydrofuranHCID 8028—
Product5-(3,4-Dichlorophenoxy)-2-ethylthio-4-pyridinecarbonitrileHCID 1356022736.2%

Reaction Steps

5-Chloro-2-ethylthio-4-pyridinecarbonitrile (5.4 g) was mixed with 5.4 g of 3,4-dichlorophenol in the presence of 3.7 g of t-BuOK in 30 ml of THF and 30 ml of DMSO. The mixture was heated at boiling temperature for about 70 hours to give 3.2 g (36%) of the desired 5-(3,4-dichlorophenoxy)-2-ethylthio-4-pyridinecarbonitrile, m.p. 79°-81° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04558134
Source datasetuspto-grants-1985_12
ORD IDord-09bf00717649461e9d9fb96b8343f6d1
Source noteuspto-grants-1985_12