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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 892075Generated: October 30, 2026

1-Ethyl-1H-pyrazol-5-amine → HCID 178463040, compound

https://huagongshe.com/reaction/892075

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Ethyl-1H-pyrazol-5-amineHCID 337310—
ReactantHCID 178418806HCID 178418806—
ReactantHCID 178517101HCID 178517101—
SolventTetrahydrofuranHCID 8028—
ProductHCID 178463040HCID 178463040—

Reaction Steps

The named compound is prepared by substituting 2-ethyl-2H-pyrazol-3-ylamine for 3-aminopyrazole in the reaction of Example 1. Specifically, E & Z-3-[(hydroxy)-methylene]-1,3-dihydro-indol-2-one (0.100 gms.) is reacted with 0.1632 gms. 2-ethyl-2H-pyrazol-3-ylamine by refluxing in tetrahydrofuran (2.5 mL).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07005444B2
Source datasetuspto-grants-2006_02
ORD IDord-7f8b8e464e5d492ca25512840b95fd55
Source noteuspto-grants-2006_02