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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1421184Generated: October 26, 2026

Ammonia → 3-(1-methyl-3-indolyl)-4-(4-pyridyl)-1H-pyrrole-2,5-dione

https://huagongshe.com/reaction/1421184

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
ReactantDimethylformamideHCID 6228—
Reactant3-(1-Methyl-3-indolyl)-4-(4-pyridyl)furan-2,5-dioneHCID 18780247—
SolventWaterHCID 962—
Product3-(1-methyl-3-indolyl)-4-(4-pyridyl)-1H-pyrrole-2,5-dioneHCID 18780274—

Reaction Conditions

Temperature140 °C

Reaction Steps

200 mg of 3-(1-methyl-3-indolyl)-4-(4-pyridyl)furan-2,5-dione were treated with 5 ml of DMF and 5 ml of 33% aqueous ammonia. The resulting solution was heated at 140° C. for 17 hours. After cooling, the suspension was diluted with water. The product was filtered off, washed with water and dried to give 144 mg of 3-(1-methyl-3-indolyl)-4-(4-pyridyl)-1H-pyrrole-2,5-dione, m.p. 332°-334° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUSRE036736
Source datasetuspto-grants-2000_06
ORD IDord-bc7bf9e421254f168562f45ce5fd372f
Source noteuspto-grants-2000_06