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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 496801Generated: October 26, 2026

Hydrocodone → Codeine

https://huagongshe.com/reaction/496801

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrocodoneHCID 5284569—
ReactantThebaineHCID 5324289—
ReactantCodeinoneHCID 5459910—
ProductCodeineHCID 5284371—
ProductThebaineHCID 5324289—
ProductCodeinoneHCID 5459910—

Reaction Steps

Hydrocodone has been prepared by reduction of codeinone (Arch. Pharm (1920), 258, 295; J. Am Chem. Soc (1950), 72, 3247, U.S. Pat. No. 5,571,685) or thebaine (DE Pat. No. 441,613). However, since codeinone is obtained by oxidation of codeine in low to moderate yields, and thebaine is a relatively scarce alkaloid, these methods have little practical value.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06946556B1
Source datasetuspto-grants-2005_09
ORD IDord-c46228bdbd2a46d990394e87ee0a0f24
Source noteuspto-grants-2005_09