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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2285111Generated: October 31, 2026

1,2-Dichloroethane → HCID 86687121, compound

https://huagongshe.com/reaction/2285111

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 numberUS09145413B2
Source datasetuspto-grants-2015_09
ORD IDord-950c0dd27b5d46038d8b4950f01b252f
Source noteuspto-grants-2015_09