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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1402249Generated: October 29, 2026

1,2-Dichloroethane → HCID 86687101, compound

https://huagongshe.com/reaction/1402249

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,2-DichloroethaneHCID 11—
ReactantWaterHCID 962—
Reactant1-HydroxybenzotriazoleHCID 75771—
Reactant5-Fluoro-2-hydrazinylpyridineHCID 19916786—
ReactantHCID 22311931HCID 22311931—
SolventDimethylformamideHCID 6228—
ProductHCID 86687101HCID 8668710162.2%

Reaction Steps

To a solution of (5-fluoro-pyridin-2-yl)-hydrazine (200 mg, 1.57 mmol) in DMF (10.0 mL) was added 2-methyl-2-pyrrolidin-1-yl-propionic acid (246 mg, 1.57 mmol), EDC (332 mg, 1.73 mmol) and HOBt.H2O (21.0 mg, 0.16 mmol). The reaction was stirred overnight then partitioned between EtOAc and water. The aqueous layer was then extracted with EtOAc (3×). The combined organic layers were washed with brine, dried (MgSO4), filtered and evaporated in vacuo. The residue was purified by FCC, using 0-10% [2M NH3 in MeOH] in DCM, to give the title compound (260 mg, 62%). 1H NMR (300 MHz, CDCl3): 1.30 (6H, s), 1.76-1.84 (4H, m), 2.64-2.72 (4H, m), 6.46 (1H, br s), 6.62 (1H, dd, J 9.0, 3.6), 7.28 (1H, ddd, J 9.0, 8.0, 2.9), 8.03 (1H, d, J 2.9), 9.06 (1H, br s).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08907094B2
Source datasetuspto-grants-2014_12
ORD IDord-f6ddfe217420484fbf6287354d362bde
Source noteuspto-grants-2014_12