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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1882304Generated: November 1, 2026

Naproxen → Desmethylnaproxen

https://huagongshe.com/reaction/1882304

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 numberUS08318973B2
Source datasetuspto-grants-2012_11
ORD IDord-850c7d0584a34e79b1627f53cbc4b73e
Source noteuspto-grants-2012_11