Triethylamine → 8-(5-Fluoro-2-methylphenoxymethyl)-7-(2-methoxy-4-methylsulfonyloxyphenyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

HRID 215823Notes

Reaction equation

HRID 215823 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.[CH3:41][S:42](Cl)(=[O:44])=[O:43]>ClCCl>[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]([O:29][S:42]([CH3:41])(=[O:44])=[O:43])=[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

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl 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 251223548-(5-Fluoro-2-methylphenoxymethyl)-7-(2-methoxy-4-methylsulfonyloxyphenyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-oneYield 98%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

8-(5-Fluoro-2-methylphenoxymethyl)-7-(4-hydroxy-2-methoxyphenyl)-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one (Reference Compound No. 14-1, 61.1 mg, 0.136 mmol) was dissolved in anhydrous dichloromethane (1 mL), and triethylamine (44 μL, 0.319 mmol) and methanesulfonyl chloride (13 μL, 0.168 mmol) were added thereto successively. The reaction mixture was stirred at room temperature for 3 hours and 15 minutes. The reaction mixture was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled compound (68.3 mg) as a colorless amorphous product. (Yield 98%)

Workup

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

Sources & evidence

ORD record
ord-db8dabd0a79c4b8db76452fdc8f91f01
Source dataset
uspto-grants-2012_06
Patent number
US08193187B2

Reaction notes

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