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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1860779Generated: October 31, 2026

Water → 5-(2-Chloroethyl)Oxindole

https://huagongshe.com/reaction/1860779

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantTriethylsilaneHCID 12052—
Reactant5-(Chloroacetyl)-1,3-dihydro-2H-indol-2-oneHCID 2060576—
SolventTrifluoroacetic acidHCID 6422—
Product5-(2-Chloroethyl)OxindoleHCID 1458139265%

Reaction Steps

A solution of 5-chloroacetyl-2-oxindole (4.18 g) in trifluoroacetic acid (30 ml) was cooled in an ice bath and 4.65 g of triethylsilane added. The mixture was then stirred at room temperature for 3 hours. The mixture was poured into 150 ml of water and the precipitate which formed was collected by vacuum filtration, washed with 50 ml of water and dried to give 2.53 g (65% yield) of 5-(2-chloroethyl)-2-oxindole as a reddish-brown solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06531502B1
Source datasetuspto-grants-2003_03
ORD IDord-40414e2690474a68b9669c147d0e7239
Source noteuspto-grants-2003_03