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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1372077Generated: October 25, 2026

Dimethylformamide → 1-[4-(4-Chloro-phenyl)-piperazin-1-yl]-2-(4-chloro-5-phenyl-3-trifluoromethyl-pyrazol-1-yl)-ethanone

https://huagongshe.com/reaction/1372077

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamideHCID 6228—
ReactantPotassium CarbonateHCID 11430—
Reactant1-(Chloroacetyl)-4-(4-chlorophenyl)piperazineHCID 4053957—
ReactantHCID 178506302HCID 178506302—
SolventEthyl acetate hexaneHCID 21226206—
Product1-[4-(4-Chloro-phenyl)-piperazin-1-yl]-2-(4-chloro-5-phenyl-3-trifluoromethyl-pyrazol-1-yl)-ethanoneHCID 21070997—

Reaction Steps

Protocol T was followed using 4-Chloro-5-phenyl-3-trifluoromethyl-1H-pyrazole, K2CO3, 2-Chloro-1-[4-(4-chloro-phenyl)-piperazin-1-yl]-ethanone and DMF. Column chromatography using a solvent mixture (hexane/ethyl acetate=2/3) afforded the title compound as white solid. 1H NMR (400 MHz, CDCl3): 7.82–7.84 (m, 2H), 7.4–7.48 (m, 3H), 6.9–7.04 (m, 2H), 6.88–6.94 (m, 2H), 5.22 (s, 1H), 3.76–3.88(m, 2H), 3.6–3.68 (m, 2H), 3.1–3.22 (m, 4H). 13C NMR (400 MHz, CDCl3): 164.2, 130.4, 128, 126, 118.2, 116.4, 52.2, 50, 44, 41.8.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07157464B2
Source datasetuspto-grants-2007_01
ORD IDord-4779f9b00a714170a306be5515ff825f
Source noteuspto-grants-2007_01