Potassium Carbonate → 4-Methoxy-2-fluoro-3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)benzaldehyde

HRID 1884483

反応式

HRID 1884483 の反応式
[F:1][C:2]1[C:9](S(C(F)(F)F)(=O)=O)=[C:8]([O:17][CH3:18])[CH:7]=[CH:6][C:3]=1[CH:4]=[O:5].[CH3:19][C:20]1[C:21](B(O)O)=[CH:22][C:23]2[C:24]([CH3:33])([CH3:32])[CH2:25][CH2:26][C:27]([CH3:31])([CH3:30])[C:28]=2[CH:29]=1.C(=O)([O-])[O-].[K+].[K+]>COCCOC.O.C(OCC)(=O)C.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>[CH3:18][O:17][C:8]1[CH:7]=[CH:6][C:3]([CH:4]=[O:5])=[C:2]([F:1])[C:9]=1[C:21]1[C:20]([CH3:19])=[CH:29][C:28]2[C:27]([CH3:31])([CH3:30])[CH2:26][CH2:25][C:24]([CH3:33])([CH3:32])[C:23]=2[CH:22]=1

参加物

8

反応物 3

HCID 11430Potassium CarbonateHCID 10037535(3,5,5,8,8-Pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)boronic acidHCID 222683312-Fluoro-4-methoxy-3-trifluoromethanesulfonyl benzaldehyde

生成物 1

HCID 222682874-Methoxy-2-fluoro-3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)benzaldehyde収率 62%

試薬・触媒・溶媒 4

HCID 178418397HCID 178418397、化合物触媒HCID 962Water溶媒HCID 80711,2-Dimethoxyethane溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A mixture of 2-fluoro-4-methoxy-3-trifluoromethanesulfonyl benzaldehyde (1.21 g, 4.01 mmol), (3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl) boronic acid (1.08 g, 4.41 mmol) and potassium carbonate (2.22 g, 16.04 mmol) in 1,2-dimethoxyethane (30 mL) and water (2 mL) was degassed with argon for 30 minutes. Tetrakis(triphenylphosphine)palladium(0) (0.23 g, 0.2 mmol) was added and the mixture heated at reflux under argon for 16 hours. The solution was cooled to room temperature, diluted with ethyl acetate and washed successively with water and brine, dried over anhydrous magnesium sulfate, filtered and evaporated. The residue was chromatographed on silica gel (Biotage, eluent: ethyl acetate/hexane, 0.5:8.5) to give 0.87 g of 4-methoxy-2-fluoro-3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl) benzaldehyde (62%). 1H NMR (500 MHz; CDCl3): δ1.26 (s, 6 H), 1.32 (s, 6 H), 1.69 (s, 4 H), 2.07 (s, 3 H), 3.85 (s, 3 H), 7.07 (d, J=8.8 Hz, 1 H), 7.07 (s, 1 H), 7.19 (s, 1 H), 7.90 (t, J=8.8 Hz, 1 H), 10.25 (s, 1 H).

後処理

  1. customwas degassed with argon for 30 minutes
  2. temperaturethe mixture heated
  3. temperatureat reflux under argon for 16 hours
  4. washwashed successively with water and brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue was chromatographed on silica gel (Biotage, eluent: ethyl acetate/hexane, 0.5:8.5)

出典と根拠

ORDレコード
ord-a387253a6fb245008400370f8f83bad4
出典データセット
uspto-grants-2004_07
特許番号
US06765013B2

関連ノート

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