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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1440373Generated: October 25, 2026

Trifluoroacetic acid → 5,6-Dihydroxyindole

https://huagongshe.com/reaction/1440373

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant4,5-Dibenzyloxy-2,beta-dinitrostyreneHCID 54265375—
Product5,6-DihydroxyindoleHCID 114683—
Product4-Nitro-5-(2-nitroethenyl)benzene-1,2-diolHCID 53737162—

Reaction Steps

or by debenzylation of 4,5-dibenzyloxy-2,β-di-nitrostyrene; in this case the debenzylation is performed by means of trifluoroacetic acid. In a second stage 5,6-dihydroxyindole is obtained from 4,5-dihydroxy-2,β-di-nitrostyrene as indicated above (U.S. Pat. No. 4,595,765).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05498746
Source datasetuspto-grants-1996_03
ORD IDord-8b59e298c5734d82a89c2b0a69d0d239
Source noteuspto-grants-1996_03