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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1439344Generated: November 1, 2026

Phosphorus oxychloride → 3-Chloro-2-(4-chloro-2-fluorophenyl)-2,4,5,6-tetrahydrocyclopentapyrazole

https://huagongshe.com/reaction/1439344

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
Reactant2-(4-chloro-2-fluorophenyl)-1,4,5,6-tetrahydrocyclopentapyrazol-3(2H)-oneHCID 22762224—
Product3-Chloro-2-(4-chloro-2-fluorophenyl)-2,4,5,6-tetrahydrocyclopentapyrazoleHCID 20312165—

Reaction Steps

By reacting 2-(4-chloro-2-fluorophenyl)-1,4,5,6-tetrahydrocyclopentapyrazol-3(2H)-one with phosphorous oxychloride according to the procedure of Example 1(d), 3-chloro-2-(4-chloro-2-fluorophenyl)-2,4,5,6-tetrahydrocyclopentapyrazole (m.p. 102°-104° ) was obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04059434
Source datasetuspto-grants-1977_11
ORD IDord-ff557af6e6524dafbe94639261abaa7b
Source noteuspto-grants-1977_11