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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 877025Generated: October 31, 2026

Acrylonitrile → 1H-Pyrazol-3-amine, 1-(4-bromophenyl)-

https://huagongshe.com/reaction/877025

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcrylonitrileHCID 7855—
Reactant4-BromophenylhydrazineHCID 12158—
ReactantN-bromobutanimideHCID 67184—
ReactantSodium ethoxideHCID 2723922—
SolventEthanolHCID 702—
Product1H-Pyrazol-3-amine, 1-(4-bromophenyl)-HCID 23464285—

Reaction Steps

The title compound was prepared by the reaction of 4-bromophenylhydrazine with acrylonitrile in the presence of a suitable base such as sodium ethoxide in refluxing ethanol followed by oxidation with N-bromosuccinimide; 1H NMR (300 MHz, DMSO-d6) δ 3.81 (br s, 2H), 5.84 (s, 1H), 7.41 (d, J=8.7 Hz, 2H), 7.47 (d, J=8.7 Hz, 2H), 7.63 (s, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08987278B2
Source datasetuspto-grants-2015_03
ORD IDord-ddd107b0316c4273a22a7449da03b613
Source noteuspto-grants-2015_03