Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 439816Generated: October 25, 2026

Tramadol → Desmetramadol

https://huagongshe.com/reaction/439816

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTramadolHCID 33741—
Reactant(-)-(S,S)-trans-TramadolHCID 667511—
SolventEthanolHCID 702—
ProductDesmetramadolHCID 9838803—

Reaction Steps

To prepare the (+) enantiomer of the title compound, the reaction was run under the same conditions except that (+)-tramadol as the free base was used instead of the (-)-tramadol to yield 2.8 g of the (+) enantiomer of O-desmethyl tramadol (mp. 242°-3° C.) [α]D25 =+32.2 (C=1, EtOH).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05516803
Source datasetuspto-grants-1996_05
ORD IDord-c596480aa826418092da72728be5c27f
Source noteuspto-grants-1996_05