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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1859005Generated: October 30, 2026

1-Piperazinecarboxylic acid, ethyl ester → HCID 15481710, compound

https://huagongshe.com/reaction/1859005

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Piperazinecarboxylic acid, ethyl esterHCID 8431—
ReactantPotassium CarbonateHCID 11430—
Reactant1-((2-(2,4-Difluorophenyl)-3-methyloxiran-2-yl)methyl)-1H-1,2,4-triazole, (2R-cis)-HCID 10131191—
SolventDimethylformamideHCID 6228—
ProductHCID 15481710HCID 1548171024.4%

Reaction Conditions

Temperature120 °C

Reaction Steps

A mixture of (2R,3S)-2-(2,4-difluorophenyl)-3-methyl-2-(1H-1,2,4-triazol-1-yl)methyloxirane IV (1.0 g, 4.0 mmol), ethyl piperazine-1-carboxylate (1.2 ml, 8 mmol) and potassium carbonate in DMF (5 ml) was heated at 120° C. for 18 h. After cooling the reaction mixture was poured onto crushed ice and extracted with ethyl acetate (3×30 ml). The combined extract was washed with water, brine, dried (MgSO4) and concentrated and the resulting product was purified on a column of silica gel (hexane/EtOAc, 1:1) to give the title compound as off-white solid (400 mg, 24%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06153616
Source datasetuspto-grants-2000_11
ORD IDord-2158ad69b13d406d9412a125a9482271
Source noteuspto-grants-2000_11