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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2164240Generated: October 31, 2026

Phosphorus pentachloride → HCID 13341895, compound

https://huagongshe.com/reaction/2164240

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus pentachlorideHCID 24819—
Reactant3-[4-(4-Chlorophenyl)-1-(4-fluorophenyl)-1H-pyrazol-3-yl]propanoic acidHCID 13341894—
SolventDiethyl EtherHCID 3283—
ProductHCID 13341895HCID 1334189592.4%

Reaction Steps

At 0° C., 1.3 g of phosphorus pentachloride is added in incremental portions to a mixture of 1.9 g of 3-[4-(4-chlorophenyl)-1-(4-fluorophenyl)-3-pyrazolyl]propionic acid in 60 ml of diethyl ether; the mixture is agitated for 3 hours, then concentrated, and the residue recrystallized from petroleum ether, thus obtaining 1.85 g of 3-[4-(4-chlorophenyl)-1-(4-fluorophenyl)-3-pyrazolyl]propionic acid chloride, mp 111° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04503049
Source datasetuspto-grants-1985_03
ORD IDord-0f89f9e4cd594853afc17078289e0f34
Source noteuspto-grants-1985_03