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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1930368Generated: October 31, 2026

Hydrochloric Acid → HCID 69038672, compound

https://huagongshe.com/reaction/1930368

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantMethylhydrazineHCID 6061—
Reactant2,2-Dimethyl-3-oxopentanedinitrileHCID 86620165—
SolventEthanolHCID 702—
ProductHCID 69038672HCID 6903867225%

Reaction Steps

A solution of 2,2-dimethyl-3-oxo-pentanedinitrile (9 g, 66 mmol) and methyl-hydrazine (3 g, 66 mmol) in EtOH (100 mL) was treated with cone HCl (16.5 mL, 198 mmol) and the resulting mixture was refluxed overnight. The solvent was removed under reduced pressure and the residue was purified by chromatography to give 2-(5-amino-1-methyl-1 H-pyrazol-3-yl)-2-methylpropanenitrile (2.7 g, 25% yield), 1H NMR (300 MHz, CDCl3): δ 5.56 (s, 1 H), 3.63 (s, 3 H), 1.67 (s, 6 H); MS (ESI) m/z: 165.2 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08188113B2
Source datasetuspto-grants-2012_05
ORD IDord-b53150ac7e8245f5a921d993023094d8
Source noteuspto-grants-2012_05