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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2101534Generated: October 31, 2026

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

https://huagongshe.com/reaction/2101534

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 numberUS07572924B2
Source datasetuspto-grants-2009_08
ORD IDord-506a0ed099c04336b88aeeddeec6dfdd
Source noteuspto-grants-2009_08