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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1952847Generated: October 27, 2026

Thionyl Chloride → 5-(Chloromethyl)-1,2-oxazole-3-carbonyl chloride

https://huagongshe.com/reaction/1952847

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant5-(Chloromethyl)-1,2-oxazole-3-carboxylic acidHCID 21866449—
CatalystPyridineHCID 1049—
Product5-(Chloromethyl)-1,2-oxazole-3-carbonyl chlorideHCID 13001899—

Reaction Steps

120 g (743 mmol) of 5-chloromethylisoxazole-3-carboxylic acid were refluxed together with 500 ml of thionyl chloride and 2 drops of pyridine for 10 h, then concentrated under reduced pressure and subsequently distilled under 20 torr. The product distilled at 125-133° C. to result in 78 g (58% of theory).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06114358
Source datasetuspto-grants-2000_09
ORD IDord-4eec5157effa424dbf14b7ea8105e34c
Source noteuspto-grants-2000_09