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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1735098Generated: October 26, 2026

Dimethylformamide → 1-Methyl-2,4,6-trichloroindole-3-carbaldehyde

https://huagongshe.com/reaction/1735098

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamideHCID 6228—
ReactantPhosphorus oxychlorideHCID 24813—
Reactant1-Methyl-4,6-dichloro-1,3-dihydroindol-2-oneHCID 19068987—
Product1-Methyl-2,4,6-trichloroindole-3-carbaldehydeHCID 19068978—

Reaction Steps

Prepared from POCl3 (11 ml), DMF (11 ml), (43) (8.4 g), yielding (48) 6.5 g as crude product sufficiently pure for the next synthesis. 1H-NMR (DMSO-d6): δ3.8 (s, 3H), 7.43 (d, 1H), 7.86 (d, 1H), 10.52 (s, 1H). In this reaction the reaction time was 24 h instead of 3 h.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05536721
Source datasetuspto-grants-1996_07
ORD IDord-fb75c43ee94d4565b54e03135b4a3711
Source noteuspto-grants-1996_07