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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2265762Generated: October 30, 2026

Naproxen → Desmethylnaproxen

https://huagongshe.com/reaction/2265762

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 36 was filtered, dried (380 grams, 81%) and used as such for next stage.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07858077B2
Source datasetuspto-grants-2010_12
ORD IDord-e9ef9b1a3a554618803389ba26e4f156
Source noteuspto-grants-2010_12