(S)-6-Fluoro-3-methyl-3,4-dihydroquinoxalin-2(1H)-one → ethyl 4-{[(2S)-7-fluoro-2-methyl-3-oxo-3,4-dihydroquinoxalin-1(2H)-yl]sulfonyl}phenyl carbonate

Participants

Reaction Steps

(3S)-6-Fluoro-3-methyl-3,4-dihydroquinoxalin-2(1H)-one was treated according to the procedure for the preparation of 4-{[(2S)-2-ethyl-7-fluoro-3-oxo-3,4-dihydroquinoxalin-1(2H)-yl]sulfonyl}phenyl carbonate (see Example 20) to yield ethyl 4-{[(2S)-7-fluoro-2-methyl-3-oxo-3,4-dihydroquinoxalin-1(2H)-yl]sulfonyl}phenyl carbonate. MS (ESI) m/z 409 ([M+H]+); MS (ESI) m/z 407 ([M−H]−);

Provenance & Evidence