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Ethyl Acetate → 7-(5-Chloro-2-methoxyphenyl)-8-methoxycarbonyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

HRID 871972
ノート
印刷プレビュー

反応式

HRID 871972 の反応式
Br[C:2]1[C:11]([C:12]([O:14][CH3:15])=[O:13])=[C:10]2[C:5]([NH:6][C:7]([CH3:19])([CH3:18])[C:8](=[O:17])[N:9]2[CH3:16])=[CH:4][CH:3]=1.[Cl:20][C:21]1[CH:22]=[CH:23][C:24]([O:30][CH3:31])=[C:25](B(O)O)[CH:26]=1.C(=O)([O-])[O-].C(OCC)(=O)C>CN(C)C=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O.C(OCC)C>[Cl:20][C:21]1[CH:26]=[CH:25][C:24]([O:30][CH3:31])=[C:23]([C:2]2[C:11]([C:12]([O:14][CH3:15])=[O:13])=[C:10]3[C:5]([NH:6][C:7]([CH3:19])([CH3:18])[C:8](=[O:17])[N:9]3[CH3:16])=[CH:4][CH:3]=2)[CH:22]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

9

反応物 4

HCID 8857Ethyl AcetateHCID 19660Carbonate IonHCID 27357515-Chloro-2-methoxyphenylboronic acidHCID 247809997-Bromo-8-methoxycarbonyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

生成物 1

HCID 247809987-(5-Chloro-2-methoxyphenyl)-8-methoxycarbonyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one収率 86%

試薬・触媒・溶媒 4

HCID 178418397HCID 178418397、化合物触媒
HCID 962Water溶媒
HCID 3283Diethyl Ether溶媒
HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

A mixture of 7-bromo-8-methoxycarbonyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one (Reference Compound No. 9, 3.75 g, 11.5 mmol), 5-chloro-2-methoxyphenylboronic acid (2.57 g, 13.8 mmol), cessium carbonate (7.49 g, 23.0 mmol) and tetrakis(triphenylphosphine)palladium (0) (1.33 g, 1.16 mmol) was suspended in anhydrous N,N-dimethylformamide (70 ml) and stirred at 80° C. overnight under argon atmosphere. After cooling down, ethyl acetate (300 mL), diethylether (150 mL) and water (400 mL) were added and partitioned. The organic layer was washed with water (250 mL) and saturated brine (150 mL) successively, dried over anhydrous magnesium sulfate, and then the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled reference compound (3.84 g) as a colorless amorphous product. (Yield 86%)

後処理

  1. temperatureAfter cooling down
  2. custompartitioned
  3. washThe organic layer was washed with water (250 mL) and saturated brine (150 mL) successively
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent was removed under reduced pressure
  6. customThe obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate)

出典と根拠

ORDレコード
ord-d4c9c12995e14589bca3bf7b504f3b1d
出典データセット
uspto-grants-2015_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08975256B2

反応ノート

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