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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1290849Generated: October 29, 2026

Maleimide → 3a,4,7,7a-Tetrahydro-4-methoxy-4,7-ethano-1H-isoindole-1,3(2H)-dione

https://huagongshe.com/reaction/1290849

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMaleimideHCID 10935—
Reactant1-Methoxycyclohexa-1,4-dieneHCID 76156—
SolventChloroformHCID 6212—
Product3a,4,7,7a-Tetrahydro-4-methoxy-4,7-ethano-1H-isoindole-1,3(2H)-dioneHCID 15289153—

Reaction Steps

11 g (0.1 mol) of 1-methoxycyclohexa-1,4-diene are heated under reflux with 0.1 g of tris(triphenylphosphine)-ruthenium dichloride and 8.8 g (0.09 mol) of maleimide in 100 ml of absolute chloroform overnight. The mixture is concentrated and the residue is recrystallized from 100 ml of toluene.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05753669
Source datasetuspto-grants-1998_05
ORD IDord-1437bdb0047944af88b30d6a77d03725
Source noteuspto-grants-1998_05