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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 898266Generated: October 30, 2026

Methyl iodide → (3S)-3-ethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-1-methyl-3,4-dihydroquinoxalin-2(1H)-one

https://huagongshe.com/reaction/898266

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl iodideHCID 6328—
Reactant(3R)-3-ethyl-7-fluoro-4-(4-methoxybenzoyl)-1-methyl-3,4-dihydroquinoxalin-2(1H)-oneHCID 69223654—
Reactant(3S)-3-ethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-3,4-dihydroquinoxalin-2(1H)-oneHCID 69223907—
Product(3S)-3-ethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-1-methyl-3,4-dihydroquinoxalin-2(1H)-oneHCID 69220473—

Reaction Steps

(3S)-3-Ethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-3,4-dihydroquinoxalin-2(1H)-one was treated with iodomethane according to the procedure for the preparation of (3R)-3-ethyl-7-fluoro-4-(4-methoxybenzoyl)-1-methyl-3,4-dihydroquinoxalin-2(1H)-one (see Example 1) to yield (3S)-3-ethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-1-methyl-3,4-dihydroquinoxalin-2(1H)-one. MS (ESI) m/z 379 ([M+H]+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07351709B2
Source datasetuspto-grants-2008_04
ORD IDord-7a1cc02f6fb9407a9840ea44627cbe87
Source noteuspto-grants-2008_04