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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2405171Generated: November 3, 2026

Naproxen → Desmethylnaproxen

https://huagongshe.com/reaction/2405171

Reaction equation

Participants

RoleNameHCIDCharge
ReactantNaproxenHCID 156391—
SolventHydrogen BromideHCID 260—
ProductDesmethylnaproxenHCID 162920—

Reaction Steps

A mixture of Naproxen (500 grams, 2.774 mmol) and 48% HBr (1500 mL) was refluxed for 10 hours, poured onto ice water (3000 mL), and stirred for 30 minutes. Crude 29 was filtered, dried (380 grams, 81%), and used as such for the next stage.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08802892B2
Source datasetuspto-grants-2014_08
ORD IDord-927e46c5dc214a78a9a0d61e88802c62
Source noteuspto-grants-2014_08