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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1402280Generated: October 31, 2026

1,2-Dichloroethane → HCID 86687121, compound

https://huagongshe.com/reaction/1402280

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,2-DichloroethaneHCID 11—
ReactantWaterHCID 962—
ReactantTriethylamineHCID 8471—
Reactant1-HydroxybenzotriazoleHCID 75771—
Reactant1,4-Di-Boc-piperazine-2-carboxylic acidHCID 11255979—
Reactant5-Fluoro-2-hydrazinylpyridineHCID 19916786—
SolventDichloromethaneHCID 6344—
ProductHCID 86687121HCID 8668712163%

Reaction Steps

To a solution of piperazine-1,2,4-tricarboxylic acid 1,4-di-tert-butyl ester (780 mg, 2.4 mmol) and (5-fluoro-pyridin-2-yl)-hydrazine (250 mg, 2.0 mmol) and Et3N (0.83 mL, 6 mmol) in DCM (20 mL) were added HOBt.H2O (27 mg, 0.2 mmol) and EDC (542 mg, 2.4 mmol) sequentially, and then the mixture stirred at RT overnight. The mixture was partitioned between EtOAc/water and extracted with EtOAc. The combined organics were dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by FCC, using 0-10% MeOH in DCM, to give the title compound as a brown solid (550 mg, 63%). LCMS (Method 4): Rt 3.28, m/z 440 [MH+].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08907094B2
Source datasetuspto-grants-2014_12
ORD IDord-bc1ef5967dc543ed956b205c927783d9
Source noteuspto-grants-2014_12