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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1070568Generated: October 26, 2026

Indole → 3-(1H-indol-3-yl)-1-methylpyrrolidine-2,5-dione

https://huagongshe.com/reaction/1070568

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIndoleHCID 798—
ReactantN-MethylmaleimideHCID 70261—
SolventAcetic AcidHCID 176—
Product3-(1H-indol-3-yl)-1-methylpyrrolidine-2,5-dioneHCID 15326266—

Reaction Conditions

Temperature105 °C

Reaction Steps

A mixture of indole (3.14 g) and N-methylmaleimide (6.2 g, 3 equiv.) in acetic acid is heated at 105° C. for 16 hr, cooled to room temperature, held for 16 hr and filtered. The filtercake is washed with acetic acid and dried to afford the title product, 5.5 g, identified by HPLC and mass spectral analyses.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06903112B2
Source datasetuspto-grants-2005_06
ORD IDord-7877840b8ab04b71bb02185f4d3c4907
Source noteuspto-grants-2005_06