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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1860705Generated: October 31, 2026

5-Fluoroisatin → 5-fluoro-1,3-dihydro-2H-indol-2-one

https://huagongshe.com/reaction/1860705

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-FluoroisatinHCID 236566—
SolventHydrazine hydrate (1:1)HCID 24654—
Product5-fluoro-1,3-dihydro-2H-indol-2-oneHCID 3731012—

Reaction Steps

5-Fluoroisatin (8.2 g) was dissolved in 50 mL of hydrazine hydrate and refluxed for 1.0 hr. The reaction mixtures were then poured in ice water. The precipitate was then filtered, washed with water and dried in a vacuum oven to afford the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06531502B1
Source datasetuspto-grants-2003_03
ORD IDord-abbfd2dd6eb142b4bb39bc508447a4e6
Source noteuspto-grants-2003_03