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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1943931Generated: November 3, 2026

Hydrazine hydrate (1:1) → HCID 55285667, compound

https://huagongshe.com/reaction/1943931

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant(2Z)-3-[(1-Methylethyl)amino]-3-(methylthio)-2-propenenitrileHCID 86652503—
SolventEthanolHCID 702—
ProductHCID 55285667HCID 5528566762.4%

Reaction Steps

A mixture of (Z)-3-(isopropylamino)-3-(methylthio)acrylonitrile (0.413 g, 2.64 mmol) and hydrazine monohydrate (0.38 mL, 7.93 mmol) in EtOH (6 mL) was heated to reflux for 16 hours. After cooling to room temperature, the reaction mixture was concentrated. The residue was purified by column chromatography, eluting with ethyl acetate, DCM/MeOH (9:1) to give N3-isopropyl-1H-pyrazole-3,5-diamine (0.231 g, 62% over 2 steps) as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08394795B2
Source datasetuspto-grants-2013_03
ORD IDord-1aa0d19f5a26406592838b4bfdc8bdfc
Source noteuspto-grants-2013_03