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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1815262Generated: October 29, 2026

Water → 5-acetyl-2,3-dihydro-1H-indol-2-one

https://huagongshe.com/reaction/1815262

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantAcetyl chlorideHCID 6367—
ReactantOxindoleHCID 321710—
Solvent1,2-DichloroethaneHCID 11—
Product5-acetyl-2,3-dihydro-1H-indol-2-oneHCID 1021964373%

Reaction Conditions

Temperature50 °C

Reaction Steps

2-Oxindole (3 g) was suspended in 1,2-dichloroethane and 3.2 mL acetyl chloride were slowly added. The resulting suspension was heated to 50° C. for 5 hours, cooled, and poured into water. The resulting precipitate was collected by vacuum filtration, washed copiously with water and dried under vacuum to give 2.9 g (73% yield) of the title compound as a brown solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06878733B1
Source datasetuspto-grants-2005_04
ORD IDord-a5e51818525e4c38b3990283b4736005
Source noteuspto-grants-2005_04