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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1730975Generated: November 2, 2026

Ethylenediamine → 9-Phenyl-1,2,3,9b-tetrahydro-5H-imidazo[2,1-a]isoindol-5-one

https://huagongshe.com/reaction/1730975

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthylenediamineHCID 3301—
Reactant2-Benzoylbenzoic AcidHCID 6813—
Product9-Phenyl-1,2,3,9b-tetrahydro-5H-imidazo[2,1-a]isoindol-5-oneHCID 21494586—

Reaction Steps

Reflux 45 g. of o-benzoylbenzoic acid and 120 ml. of ethylenediamine for 3 hours. Pour the mixture into ice water, allow to stand until the mixture is at room temperature and separate the product by filtration. Recrystallize from ethanol to obtain 9-phenyl-1,2,3,9b-tetrahydro-5H-imidazo-[2,1-a]isoindol-5-one, m.p. 155°-7° C. Elemental analysis confirms the empirical formula C16H14N2O.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03994920
Source datasetuspto-grants-1976_11
ORD IDord-06aa031440834019bcb830f0cb77c577
Source noteuspto-grants-1976_11