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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 456632Generated: October 30, 2026

Hydrazine hydrate (1:1) → HCID 178469891, compound

https://huagongshe.com/reaction/456632

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactantethyl 5-(2-chloronicotinoyl)-1H-pyrrole-3-carboxylateHCID 86592241—
SolventEthanolHCID 702—
ProductHCID 178469891HCID 178469891—

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 5-(2-chloro-pyridine-3-carbonyl)-1H-pyrrole-3-carboxylic acid ethyl ester (1.2 g, 4.32 mmol) and hydrazine hydrate (6.27 mL) in ethanol (50 mL) was heated at 80° C. for 24 hours. The reaction was concentrated and the residue was neutralized to pH 7 with 1N HCl, extracted with ethyl acetate. The combined ethyl acetate was dried, concentrated and purified on a silica gel column to give the titled compound as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07186716B2
Source datasetuspto-grants-2007_03
ORD IDord-cf11c95bd4e749a0aaf8dee585cee705
Source noteuspto-grants-2007_03