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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 128751Generated: October 26, 2026

4-Bromophenylhydrazine hydrochloride → 3-Phthalimido-6-bromo-1,2,3,4-tetrahydrocarbazole

https://huagongshe.com/reaction/128751

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Bromophenylhydrazine hydrochlorideHCID 12157—
Reactant2-(4-oxocyclohexyl)-2,3-dihydro-1H-isoindole-1,3-dioneHCID 11998391—
Solvent1-ButanolHCID 263—
Product3-Phthalimido-6-bromo-1,2,3,4-tetrahydrocarbazoleHCID 18944254104.1%

Reaction Steps

Reaction of 4-bromophenylhydrazine hydrochloride (4.0 g, 18.1 mmol) with 4-phthalimido-cyclohexanone (4.39 g, 18.1 mmol) in refluxing n-butanol for 20 min, followed by cooling, filtration, and evaporation of the filtrate to dryness yielded 3-phthalimido-6-bromo-1,2,3,4-tetrahydrocarbazole as an orange solid (7.45 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05464864
Source datasetuspto-grants-1995_11
ORD IDord-356706dc8cf34c75a7037dfde7dad757
Source noteuspto-grants-1995_11