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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1386828Generated: October 31, 2026

Thionyl Chloride → 5-Methyl-1,2-oxazole-4-carbonyl chloride

https://huagongshe.com/reaction/1386828

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant5-Methylisoxazole-4-carboxylic acidHCID 1425240—
SolventTolueneHCID 1140—
Product5-Methyl-1,2-oxazole-4-carbonyl chlorideHCID 2759917—

Reaction Conditions

Temperature80 °C

Reaction Steps

127.1 g (1.0 mol) of 5-methylisoxazole-4-carboxylic acid are initially introduced into 1 l of toluene, 129.8 g (1.1 mol) of thionyl chloride are added dropwise and the mixture is then heated at 80° C. for 6 h. The volume is concentrated under reduced pressure to approximately one half and the toluene solution is used directly for further reactions.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06265588B1
Source datasetuspto-grants-2001_07
ORD IDord-32e798756d954ff1b3336108b39bfc9f
Source noteuspto-grants-2001_07