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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 58066Generated: October 30, 2026

1,2-Dichloroethane → 2-(4-Bromo-3,5-dimethyl-1H-pyrazol-1-yl)-1-(3-hydroxy-1-azetidinyl)ethanone

https://huagongshe.com/reaction/58066

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,2-DichloroethaneHCID 11—
Reactant1-HydroxybenzotriazoleHCID 75771—
ReactantDiisopropylethylamineHCID 81531—
Reactant2-(4-bromo-3,5-dimethyl-1H-pyrazol-1-yl)acetic acidHCID 819616—
Reactant3-HydroxyazetidineHCID 1514290—
SolventDimethylformamideHCID 6228—
SolventEthyl AcetateHCID 8857—
Product2-(4-Bromo-3,5-dimethyl-1H-pyrazol-1-yl)-1-(3-hydroxy-1-azetidinyl)ethanoneHCID 89782919—

Reaction Steps

To 2-(4-bromo-3,5-dimethyl-1H-pyrazol-1-yl)acetic acid (0.4 g, 1.716 mmol) in DMF (6 mL) were added azetidin-3-ol (0.151 g, 2.060 mmol), HOBt (0.301 g, 2.231 mmol), and EDC (0.461 g, 2.403 mmol), followed by N-ethyl-N-isopropylpropan-2-amine (1.495 mL, 8.58 mmol). The reaction mixture was stirred for 18 hours at room temperature. The crude reaction mixture was subsequently diluted with EtOAc, washed with brine, dried over Na2SO4, and concentrated to give the title compound, which was used without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09434743B2
Source datasetuspto-grants-2016_09
ORD IDord-50b2cd0b08494a209af383aea6476a4e
Source noteuspto-grants-2016_09