Ethyl Acetate → 6-(3-Chloro-4-fluoro-phenyl)-8-fluoro-4,4-dimethyl-1,4-dihydrobenzo[d][1,3]oxazin-2-one

HRID 1634972ノート

反応式

HRID 1634972 の反応式
Br[C:2]1[CH2:3][CH:4]2[C:9]([CH3:11])([CH3:10])[O:8][C:7](=[O:12])[NH:6][C:5]2=[C:13]([F:15])[CH:14]=1.[F:16][C:17]1[CH:22]=[CH:21][C:20](B(O)O)=[CH:19][C:18]=1[Cl:26].C(=O)([O-])[O-].[Na+].[Na+].C(OCC)(=O)C>COCCOC.O.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[Cl:26][C:18]1[CH:19]=[C:20]([C:2]2[CH:14]=[C:13]([F:15])[C:5]3[NH:6][C:7](=[O:12])[O:8][C:9]([CH3:11])([CH3:10])[C:4]=3[CH:3]=2)[CH:21]=[CH:22][C:17]=1[F:16]

参加物

8

反応物 4

HCID 8857Ethyl AcetateHCID 10340Sodium CarbonateHCID 27346603-Chloro-4-fluorophenylboronic Acid (contains varying amounts of Anhydride)HCID 688225046-Bromo-8-fluoro-4,4-dimethyl-dihydro-benzo[d][1,3]oxazin-2-one

生成物 1

HCID 98584066-(3-Chloro-4-fluoro-phenyl)-8-fluoro-4,4-dimethyl-1,4-dihydrobenzo[d][1,3]oxazin-2-one収率 66%

試薬・触媒・溶媒 3

HCID 11979704Tetrakis(triphenylphosphine)palladium触媒HCID 962Water溶媒HCID 80711,2-Dimethoxyethane溶媒

反応条件

温度
85 °C

実験手順

A mixture of 6-bromo-8-fluoro-4,4-dimethyl-dihydro-benzo[d][1,3]oxazin-2-one (0.176 g, 0.64 mmol), 4-fluoro-3-chlorophenyl boronic acid (0.15 g, 0.84 mmol), tetrakis(triphenylphosphine)-palladium (0) (0.04 g, 0.032 mmol), and sodium carbonate (0.20 g, 1.92 mmol) in DME (10 mL) and water (5 mL) was subject to a blanket of nitrogen for 15 minutes at 50° C. and then was heated at 85° C. for 1 hour. The reaction mixture was cooled to room temperature and ethyl acetate (100 mL) was added. The organic layer was washed twice with aqueous ammonium chloride (100 mL) and once with brine (100 mL), dried over magnesium sulfate and concentrated. The residue was purified via chromatography (silica gel, 25% ethyl acetate/hexane) to give 6-(3-chloro-4-fluoro-phenyl)-8-fluoro-4,4-dimethyl-1,4-dihydrobenzo[d][1,3]oxazin-2-one as a white solid (0.13 g, 66%): mp 246-248° C.; 1H-NMR (DMSO-d6) δ10.5 (s, 1H), 8.00 (dd, 1H, J=7.09, 2.32 Hz), 7.78-7.73 (m, 1H), 7.62 (dd, 1H, J=11.86, 1.77 Hz), 7.7 (t, 2H, J=9 Hz), 1.7 (s, 6H); MS (APCI) m/z 324 ([M+H]+, 100%); Anal. Calc. For C16H12F2NO2 0.5 H2O C, 57.76, H, 3.94, N, 4.21. Found: C, 57.49, H, 3.69, N, 4.03.

後処理

  1. temperatureThe reaction mixture was cooled to room temperature
  2. washThe organic layer was washed twice with aqueous ammonium chloride (100 mL) and once with brine (100 mL)
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated
  5. customThe residue was purified via chromatography (silica gel, 25% ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-f96576af998b4e738a2a03fd7ec83cb1
出典データセット
uspto-grants-2003_01
特許番号
US06509334B1

反応ノート

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