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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 61309Generated: October 30, 2026

Trifluoroacetic acid → 2-(2-hydroxyphenyl)-1-(1-pentyl-1H-indol-3-yl)ethanone

https://huagongshe.com/reaction/61309

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactantt-butyl 2-(2-(2-oxo-2-(1-pentyl-1H-indol-3-yl)ethyl)phenoxy)acetateHCID 86691091—
SolventDichloromethaneHCID 6344—
Product2-(2-hydroxyphenyl)-1-(1-pentyl-1H-indol-3-yl)ethanoneHCID 8669109054%

Reaction Steps

t-Butyl 2-(2-(2-oxo-2-(1-pentyl-1H-indol-3-yl)ethyl)phenoxy)acetate (O-desmethyl JWH-250 t-butyl 2-CME) 6 (1.09 g, 2.50 mmol) was dissolved in dichloromethane (20 ml) and trifluoroacetic acid (10 ml) was added and the reaction mixture was stirred at room temperature overnight. The solvent was removed in vacuo and the residue was purified by column chromatography (Biotage Isolera 4, SNAP-50 g, 50% ethyl acetate in hexane) to give 512 mg (54%) of O-desmethyl JWH-250 2-CME (Hapten 1) as a tan solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09441033B2
Source datasetuspto-grants-2016_09
ORD IDord-786b7da843d2405b9b0be44890d3e808
Source noteuspto-grants-2016_09