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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 456862Generated: October 25, 2026

Triethylamine → 2-(4-(4-Nitrophenyl)piperazin-1-yl)ethanol

https://huagongshe.com/reaction/456862

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant2-BromoethanolHCID 10898—
ReactantPotassium CarbonateHCID 11430—
Reactant1-(4-Nitrophenyl)piperazineHCID 80447—
SolventWaterHCID 962—
SolventDichloromethaneHCID 6344—
Product2-(4-(4-Nitrophenyl)piperazin-1-yl)ethanolHCID 276393689%

Reaction Conditions

Temperature45 °C

Reaction Steps

7.5 g (60 mmol) of 2-bromoethanol is added, under argon atmosphere, to a mixture of 10.35 g (50 mmol) of 1-(4-nitrophenyl)piperazine, 7.6 g (55 mmol) of K2CO3 and 9 ml (65 mmol) of Et3N in 200 ml of CH2Cl2. The whole is then heated at 45° C. for 18 hours. The reaction mixture is finally diluted with 50 ml water, agitated and decanted. The organic phase is washed with 50 ml of salt water, dried over MgSO4, filtered and concentrated under vacuum. The residue is crystallized from diisopropyl ether. A yellow solid is obtained with a yield of 89%. Melting point: 98–99° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07186752B2
Source datasetuspto-grants-2007_03
ORD IDord-47fb220006ef4657a08a2b8cee1e8a13
Source noteuspto-grants-2007_03