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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 469265Generated: October 25, 2026

Piperazin-2-one → HCID 51034692, compound

https://huagongshe.com/reaction/469265

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazin-2-oneHCID 231360—
Reactant(Isocyanatomethylene)dibenzeneHCID 4250935—
SolventDichloromethaneHCID 6344—
ProductHCID 51034692HCID 5103469275%

Reaction Steps

To a solution of piperazin-2-one (100 mg, 1 mmol) was added (isocyanatomethylene)dibenzene (209 mg, 1 mmol) in dichloromethane (5 mL). The solution was stirred for 2 hours at room temperature and concentrated in vacuo. The residue was diluted with EtOAc and then washed consecutively with saturated aqueous NaHCO3 and brine. The organic layer was dried (Na2SO4), filtered, and concentrated in vacuo. The crude material was purified by flash column chromatography (2:98 MeOH/DCM) to give desired compound N-benzhydryl-3-oxopiperazine-1-carboxamide (Compound 1) (232 mg, 75%) as a white powder.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08629149B2
Source datasetuspto-grants-2014_01
ORD IDord-60572406aa7d41e09af1ff9530a6974e
Source noteuspto-grants-2014_01