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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1835151Generated: October 25, 2026

Methylhydrazine → 2,3-Dihydro-2-methyl-6-(1-naphthalenylmethyl)-1H-pyrrolo[3,4-d]pyridazin-1,4(6H)-dione

https://huagongshe.com/reaction/1835151

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethylhydrazineHCID 6061—
ReactantDiethyl 1-(1-naphthalenylmethyl)pyrrole-3,4-dicarboxylateHCID 23503264—
SolventEthanolHCID 702—
Product2,3-Dihydro-2-methyl-6-(1-naphthalenylmethyl)-1H-pyrrolo[3,4-d]pyridazin-1,4(6H)-dioneHCID 23503248—

Reaction Conditions

Temperature200 °C

Reaction Steps

Methyl hydrazine (0.55 ml) was added to a solution of diethyl 1-(1-naphthalenylmethyl)pyrrole-3,4-dicarboxylate (1.00 g) in ethanol (10 ml). The mixture was heated at 200° C. in a sealed tube for 3 days. The mixture was evaporated and the residue was purified by column chromatography, eluting with ethyl acetate:methanol (19:1). The resulting solid was suspended in ethyl acetate (25 ml), heated to reflux, and allowed to cool to ambient temperature. The title compound (0.105 g) was collected by filtration.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06770646B2
Source datasetuspto-grants-2004_08
ORD IDord-d616436f19a0493ab55b9218d141bc9f
Source noteuspto-grants-2004_08