Methanol → (E)-4-[2-(5,6-Dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)ethenyl]-benzoic acid

HRID 324228

反応式

HRID 324228 の反応式
[CH3:1][C:2]1([CH3:32])[CH2:11][CH:10]=[C:9]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][CH:13]=2)[C:8]2[CH:7]=[C:6](/[CH:19]=[CH:20]/[C:21]3[CH:31]=[CH:30][C:24]([C:25]([O:27]CC)=[O:26])=[CH:23][CH:22]=3)[CH:5]=[CH:4][C:3]1=2.[Li+].[OH-].CO>C1COCC1>[CH3:1][C:2]1([CH3:32])[CH2:11][CH:10]=[C:9]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][CH:13]=2)[C:8]2[CH:7]=[C:6](/[CH:19]=[CH:20]/[C:21]3[CH:22]=[CH:23][C:24]([C:25]([OH:27])=[O:26])=[CH:30][CH:31]=3)[CH:5]=[CH:4][C:3]1=2

参加物

5

反応物 3

HCID 887MethanolHCID 3939Lithium HydroxideHCID 22323752Ethyl (E)-4-[2-(5,6-dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)ethenyl]-benzoate2 回

生成物 1

HCID 15870951(E)-4-[2-(5,6-Dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)ethenyl]-benzoic acid

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
55 °C

実験手順

To a solution of 65.0 mg (0.190 mmol) of ethyl (E)4-[2-(5,6-dihydro-5,5-dimethyl-8-(4-methylphenyl)- 2-naphthalenyl)ethenyl)-benzoate (Compound 44) in 4.0 ml of THF was added 30.0 mg of LiOH (0.909 mmol, 1.0 ml of a 1.1M solution) and 1.0 ml of MeOH. The solution was heated to 55° C. for 3 hours, cooled to room temperature, and concentrated under reduced pressure. The residue was dissolved in H2O and extracted with hexanes. The aqueous layer was acidified to pH 1 with 10% HCl, and extracted with Et2O. The combined organic layers were washed with saturated aqueous NaCl, diluted with EtOAc to give a clear solution, and dried over Na2SO4. The solvents were removed under reduced pressure to give the title compound as a colorless solid. 1H NMR (d6-DMSO): δ 7.86 (2H, d, J=8.4 Hz), 7.66 (2H, d, J=8.4 Hz), 7.58 (1H, dd, J=1.7, 8.1 Hz), 7.41 (1H, d, J=8.1 Hz), 7.28 (1H, d, J=16.5 Hz), 7.23 (4H, s), 7.08 (1H, d, J=1.7 Hz), 7.07 (1H, d, J=16.5 Hz), 5.97 (1H, t, J=4.6 Hz), 2.35 (3H, s), 2.31 (2H, d, J=4.6 Hz), 1.29 (6H, s).

後処理

  1. temperaturecooled to room temperature
  2. concentrationconcentrated under reduced pressure
  3. dissolutionThe residue was dissolved in H2O
  4. extractionextracted with hexanes
  5. extractionextracted with Et2O
  6. washThe combined organic layers were washed with saturated aqueous NaCl
  7. additiondiluted with EtOAc
  8. customto give a clear solution
  9. dry with materialdried over Na2SO4
  10. customThe solvents were removed under reduced pressure

出典と根拠

ORDレコード
ord-2de67ba53fbf41829573448e65a10a54
出典データセット
uspto-grants-2001_04
特許番号
US06218128B1

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