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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 898268Generated: October 31, 2026

Iodoethane → (3S)-1,3-diethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-3,4-dihydroquinoxalin-2(1H)-one

https://huagongshe.com/reaction/898268

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIodoethaneHCID 6340—
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)-1,3-diethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-3,4-dihydroquinoxalin-2(1H)-oneHCID 69223084—

Reaction Steps

(3S)-3-Ethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-3,4-dihydroquinoxalin-2(1H)-one (see Example 29) was treated with iodoethane 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)-1,3-diethyl-7-fluoro-4-[(4-methoxyphenyl)sulfonyl]-3,4-dihydroquinoxalin-2(1H)-one. MS (ESI) m/z 393 ([M+H]+); Anal. Calcd for C19H21FN2O4S: C, 58.15; H, 5.39; N, 7.14. Found: C, 58.36; H, 5.56; N, 7.05.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07351709B2
Source datasetuspto-grants-2008_04
ORD IDord-446ae1e3eb9a46d99134dc8d59750719
Source noteuspto-grants-2008_04