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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2375381Generated: October 31, 2026

Acetic Anhydride → 1-[1-(3-Chloro-4-ethoxyphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]ethan-1-one

https://huagongshe.com/reaction/2375381

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AnhydrideHCID 7918—
ReactantHydrogen iodideHCID 24841—
Reactant1-(3-Chloro-4-ethoxyphenyl)-2,5-dimethyl-1H-pyrroleHCID 69275347—
Product1-[1-(3-Chloro-4-ethoxyphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]ethan-1-oneHCID 69275386—

Reaction Steps

Utilizing the general procedure outlined in EXAMPLE 1, 1-(3-chloro-4-ethoxyphenyl)-2,5-dimethylpyrrole (1.21 g, 4.8 mmol), acetic anhydride (5 mL), and hydriodic acid (0.07 mL, 0.83 mmol) reacted to give 3-acetyl-1-(3-chloro-4-ethoxyphenyl)-2,5-dimethylpyrrole as a tan solid: 1H NMR (CDCl3, 500 MHz) δ 7.21 (d, 1H), 7.04-6.98 (m, 2H), 6.29 (s, 1H), 4.17 (q, 2H), 2.41 (s, 3H), 2.30 (s, 3H), 1.98 (s, 3H), 1.52 (t, 3H); MS (ESI) 292 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07465730B2
Source datasetuspto-grants-2008_12
ORD IDord-55e44ca75c1c4be29ca434c92869b3ef
Source noteuspto-grants-2008_12