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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 411666Generated: October 27, 2026

3-(furan-2-yl)-1H-pyrazol-5-amine → 3-[[[5-(furan-2-yl)-1H-pyrazol-3-yl]amino]methylidene]-1H-indol-2-one

https://huagongshe.com/reaction/411666

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-(furan-2-yl)-1H-pyrazol-5-amineHCID 523183—
ReactantHCID 178418806HCID 178418806—
ReactantHCID 178517101HCID 178517101—
SolventTetrahydrofuranHCID 8028—
Product3-[[[5-(furan-2-yl)-1H-pyrazol-3-yl]amino]methylidene]-1H-indol-2-oneHCID 178517070—

Reaction Steps

The named compound is prepared by substituting 3-amino-5-(2-furyl)-pyrazole for 3-aminopyrazole in the reaction of Example 1. Specifically, E & Z-3-[(hydroxy)-methylene]-1,3-dihydro-indol-2-one (0.10 gms.) is reacted with 0.1480 gms. of 3-amino-5-(2-furyl)-pyrazole by refluxing in tetrahydrofuran (2.5 mL).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06559173B1
Source datasetuspto-grants-2003_05
ORD IDord-456798f772df4976bbdf62af34b2807d
Source noteuspto-grants-2003_05