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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1587779Generated: October 30, 2026

Potassium Carbonate → 4-[[4-[(2,6-Dichlorophenyl)methyl]-1-piperazinyl]acetyl]-4.5-dihydro-6-methyl-7-[3-(trifluoromethyl)phenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile, hydrochloride

https://huagongshe.com/reaction/1587779

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant1-(2,6-Dichlorobenzyl)piperazineHCID 770796—
Reactant4-(Chloroacetyl)-4,5-dihydro-6-methyl-7-[3-(trifluoromethyl)phenyl]pyrazolo[1,5-a]-pyrimidine-3-carbonitrileHCID 15101085—
SolventTolueneHCID 1140—
Product4-[[4-[(2,6-Dichlorophenyl)methyl]-1-piperazinyl]acetyl]-4.5-dihydro-6-methyl-7-[3-(trifluoromethyl)phenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile, hydrochlorideHCID 131716671—

Reaction Steps

A mixture of 1 g of 4-(chloroacetyl)-7-[3-(trifluoromethyl)phenyl]-4,5-dihydro-6-methylpyrazolo[1,5-a]pyrimidine-3-carbonitrile, 1 g of 2,6-dichlorobenzylpiperazine, 600 mg of potassium carbonate and 100 ml of toluene was reacted as described in Example 16, giving the base form of the product, which was converted to the hydrochloride salt by the procedure of Example 97, giving 1.66 g, mp 252°-254° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05219857
Source datasetuspto-grants-1993_06
ORD IDord-c68a3305bfbc4583bf6aea6c997dc202
Source noteuspto-grants-1993_06