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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 631721Generated: October 29, 2026

(Phenylmethyl)hydrazine → 1-BENZYL-3-TERT-BUTYL-1H-PYRAZOL-5-AMINE

https://huagongshe.com/reaction/631721

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(Phenylmethyl)hydrazineHCID 11157—
ReactantPentanenitrile, 4,4-dimethyl-3-oxo-HCID 108871—
Product1-BENZYL-3-TERT-BUTYL-1H-PYRAZOL-5-AMINEHCID 1676929036.3%

Reaction Steps

Following the procedure in Example 161A Step 3, benzylhydrazine (977 mg, 8.0 mmol) and 4,4-dimethyl-3-oxopentanenitrile (1.0 g, 8.0 mmol) to give 1-benzyl-3-tert-butyl-1H-pyrazol-5-amine (666 mg, 2.90 mmol, 36%). 1H NMR (300 MHz, DMSO-d6) δ 7.32-7.21 (m, 3H), 7.09 (d, 2H), 5.17 (s, 1H), 5.05 (d, 4H), 1.15 (s, 9H); LC-MS (ESI) m/z 230 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09320739B2
Source datasetuspto-grants-2016_04
ORD IDord-42d69be8b88b4657ab346a4713db11cc
Source noteuspto-grants-2016_04