Triethylamine → 7-(4-Butyryloxy-2-methoxyphenyl)-8-(5-fluoro-2-methylphenoxymethyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

HRID 871995Notes

Reaction equation

HRID 871995 reaction equation
[F:1][C:2]1[CH:3]=[CH:4][C:5]([CH3:33])=[C:6]([CH:32]=1)[O:7][CH2:8][C:9]1[C:10]([C:23]2[CH:28]=[CH:27][C:26]([OH:29])=[CH:25][C:24]=2[O:30][CH3:31])=[CH:11][CH:12]=[C:13]2[C:18]=1[N:17]([CH3:19])[C:16](=[O:20])[C:15]([CH3:22])([CH3:21])[NH:14]2.C(N(CC)CC)C.[C:41](Cl)(=[O:45])[CH2:42][CH2:43][CH3:44]>O1CCCC1>[C:41]([O:29][C:26]1[CH:27]=[CH:28][C:23]([C:10]2[C:9]([CH2:8][O:7][C:6]3[CH:32]=[C:2]([F:1])[CH:3]=[CH:4][C:5]=3[CH3:33])=[C:18]3[C:13]([NH:14][C:15]([CH3:22])([CH3:21])[C:16](=[O:20])[N:17]3[CH3:19])=[CH:12][CH:11]=2)=[C:24]([O:30][CH3:31])[CH:25]=1)(=[O:45])[CH2:42][CH2:43][CH3:44]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 8855Butyryl chlorideHCID 252112638-(5-Fluoro-2-methylphenoxymethyl)-7-(4-hydroxy-2-methoxyphenyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

Product 1

HCID 576719737-(4-Butyryloxy-2-methoxyphenyl)-8-(5-fluoro-2-methylphenoxymethyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-oneYield 92%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

8-(5-Fluoro-2-methylphenoxymethyl)-7-(4-hydroxy-2-methoxyphenyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one (Compound No. 11, 25 mg, 0.055 mmol) was dissolved in tetrahydrofuran (1 mL), and triethylamine (20 μL, 0.14 mmol) and butyryl chloride (7.6 μL, 0.073 mmol) were added successively. After the reaction mixture was stirred at room temperature for 1 hour, the mixture was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled compound (27 mg) as a colorless amorphous product. (Yield 92%)

Workup

  1. customthe mixture was purified by silica gel column chromatography (hexane-ethyl acetate)

Sources & evidence

ORD record
ord-435964914e184968a1fed1c81d916313
Source dataset
uspto-grants-2015_03
Patent number
US08975256B2

Reaction notes

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