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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1439343Generated: October 26, 2026

(4-Chlorophenyl)hydrazine → 2-(4-chloro-2-fluorophenyl)-1,4,5,6-tetrahydrocyclopentapyrazol-3(2H)-one

https://huagongshe.com/reaction/1439343

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(4-Chlorophenyl)hydrazineHCID 70624—
Reactant(4-Chloro-2-fluorophenyl)hydrazineHCID 2782934—
ReactantHCID 17168663HCID 17168663—
Product2-(4-chloro-2-fluorophenyl)-1,4,5,6-tetrahydrocyclopentapyrazol-3(2H)-oneHCID 22762224—

Reaction Steps

By substituting 4-chlorophenylhydrazine in the former procedure for 4-chloro-2-fluorophenylhydrazine, 2-(4-chlorophenyl)-1,4,5,6-tetrahydrocyclopentapyrazol-3(2H)-one was prepared, m.p. 193.5°-195°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04059434
Source datasetuspto-grants-1977_11
ORD IDord-5ea52d2d22e84d6b9a97823ee0c93ace
Source noteuspto-grants-1977_11