Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 889304Generated: October 26, 2026

2-Hydrazinyl-5-(trifluoromethyl)pyridine → 4-Pyridin-3-yl-2-[5-(trifluoromethyl)pyridin-2-yl]-1,2-dihydro-3h-pyrazol-3-one

https://huagongshe.com/reaction/889304

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Hydrazinyl-5-(trifluoromethyl)pyridineHCID 1477642—
Reactant3-Hydroxy-2-pyridin-3-yl-acrylic acid ethyl esterHCID 68708088—
Product4-Pyridin-3-yl-2-[5-(trifluoromethyl)pyridin-2-yl]-1,2-dihydro-3h-pyrazol-3-oneHCID 59186928—

Reaction Steps

The compound is prepared analogously to Example 2 from 580 mg (3.00 mmol) of the compound from Example 2A and 558 mg (3.00 mmol) 2-hydrazino-5-(trifluoromethyl)pyridine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08252817B2
Source datasetuspto-grants-2012_08
ORD IDord-43d41458e9f249489f0304243a409c5c
Source noteuspto-grants-2012_08