Ethyl Acetate → 3-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}-5-[(3-methyl-4-oxo-3,4-dihydro-2H-1,3-benzoxazin-7-yl)oxy]benzoic acid

HRID 548733ノート

反応式

HRID 548733 の反応式
[OH:1][C:2]1[CH:3]=[C:4]([CH:8]=[C:9]([O:11][C@@H:12]([CH3:16])[CH2:13][O:14][CH3:15])[CH:10]=1)[C:5]([OH:7])=[O:6].F[C:18]1[CH:29]=[CH:28][C:21]2[C:22](=[O:27])[N:23]([CH3:26])[CH2:24][O:25][C:20]=2[CH:19]=1.C(=O)([O-])[O-].[K+].[K+].C(OCC)(=O)C>C(#N)C>[CH3:16][C@H:12]([O:11][C:9]1[CH:8]=[C:4]([CH:3]=[C:2]([O:1][C:18]2[CH:29]=[CH:28][C:21]3[C:22](=[O:27])[N:23]([CH3:26])[CH2:24][O:25][C:20]=3[CH:19]=2)[CH:10]=1)[C:5]([OH:7])=[O:6])[CH2:13][O:14][CH3:15]

参加物

6

反応物 4

HCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 576631937-Fluoro-3-methyl-2,3-dihydro-4H-1,3-benzoxazin-4-oneHCID 576632243-hydroxy-5-[(1S)-2-methoxy-1-methylethoxy]benzoic acid

生成物 1

HCID 576631913-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}-5-[(3-methyl-4-oxo-3,4-dihydro-2H-1,3-benzoxazin-7-yl)oxy]benzoic acid収率 80.5%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

反応条件

温度
160 °C

実験手順

A mixture of 3-hydroxy-5-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}benzoic acid (175 mg, 0.77 mmol), 7-fluoro-3-methyl-2,3-dihydro-4H-1,3-benzoxazin-4-one (141 mg, 0.77 mmol) and potassium carbonate (321 mg, 2.32 mmol) in acetonitrile (5 mL) was stirred in a microwave reactor at 160° C. for 16 hours then reduced in vacuo and ethyl acetate (50 mL) added. The mixture was washed with water (50 mL), the aqueous layer acidified with 1M citric acid and extracted into ethyl acetate (2×50 mL). The combined organics were washed with brine (50 mL), dried (MgSO4), and reduced in vacuo to give the desired compound as a brown oil (0.24 g). m/z 453 (M+H)+

後処理

  1. additionadded
  2. washThe mixture was washed with water (50 mL)
  3. extractionextracted into ethyl acetate (2×50 mL)
  4. washThe combined organics were washed with brine (50 mL)
  5. dry with materialdried (MgSO4)

出典と根拠

ORDレコード
ord-7289c0bf0d314bc6a67209bf47df9aed
出典データセット
uspto-grants-2011_05
特許番号
US07943607B2

反応ノート

読み込み中…