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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1651288Generated: November 3, 2026

Toluene → 5-Chloro-6-hydroxynicotinoyl chloride

https://huagongshe.com/reaction/1651288

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTolueneHCID 1140—
ReactantThionyl ChlorideHCID 24386—
ReactantHCID 178524771HCID 178524771—
Product5-Chloro-6-hydroxynicotinoyl chlorideHCID 178521127—

Reaction Steps

6.3 g (36 mmol) of 5-chloro-6-hydroxynicotinic acid are heated under reflux in 60 ml of thionyl chloride for 4 hours. After the volatile constituents have been stripped off, 50 ml of toluene are added and the mixture is evaporated again. Colorless crystals, yield 6.9 g (quantitative), melting point: >250° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04927938
Source datasetuspto-grants-1990_05
ORD IDord-a4769c91c1a94a718858c870eb4fb1c1
Source noteuspto-grants-1990_05