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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 24421Generated: October 24, 2026

2,3-Dihydrobenzofuran-5-carboxaldehyde → 3-(2,3-Dihydrobenzofuran-5-ylmethylene)-4-methyl-1,3-dihydroindol-2-one

https://huagongshe.com/en/reaction/24421

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,3-Dihydrobenzofuran-5-carboxaldehydeHCID 735901—
Reactant4-Methyl-1,3-dihydro-2H-indol-2-oneHCID 12579382—
Product3-(2,3-Dihydrobenzofuran-5-ylmethylene)-4-methyl-1,3-dihydroindol-2-oneHCID 54519396—

Reaction Steps

2,3-Dihydro-5-formylbenzofuran (commercially available) was condensed with 4-methyl-2-oxindole to give 0.25 g of 3-(2,3-dihydrobenzofuran-5-ylmethylene)-4-methyl-1,3-dihydroindol-2-one as a yellow-orange solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06855730B2
Source datasetuspto-grants-2005_02
ORD IDord-5c434983497242c595a29c8a0e64f89f
Source noteuspto-grants-2005_02