Ethyl Acetate → 1-{[(3-Phenylpropanoyloxy)ethoxy]carbonylamino}cyclopropanecarboxylic Acid

HRID 492055ノート

反応式

HRID 492055 の反応式
[C:1]1(/[CH:7]=[CH:8]/[C:9]([O:11][CH2:12][CH2:13][O:14][C:15]([NH:17][C:18]2([C:21]([OH:23])=[O:22])[CH2:20][CH2:19]2)=[O:16])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(OC(=O)C)C>[Pd].C(O)C>[C:1]1([CH2:7][CH2:8][C:9]([O:11][CH2:12][CH2:13][O:14][C:15]([NH:17][C:18]2([C:21]([OH:23])=[O:22])[CH2:19][CH2:20]2)=[O:16])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

参加物

5

反応物 2

HCID 8857Ethyl AcetateHCID 247984111-{[((2E)-3-Phenylprop-2-enoyloxy)ethoxy]carbonylamino}cyclopropanecarboxylic Acid

生成物 1

HCID 247984941-{[(3-Phenylpropanoyloxy)ethoxy]carbonylamino}cyclopropanecarboxylic Acid収率 80.4%

試薬・触媒・溶媒 2

HCID 23938Palladium触媒HCID 702Ethanol溶媒

実験手順

A dry 100 mL round-bottomed flask equipped with a magnetic stir bar and a rubber septum was charged with 1-{[((2E)-3-phenylprop-2-enoyloxy)ethoxy]carbonylamino}cyclopropanecarboxylic acid (16) (0.8 g, 2.5 mmols) and 10% palladium on carbon in 1:1 mixture of ethylacetate and ethanol. The reaction was done at 1 atm pressure under a hydrogen balloon at room temperature. After the reaction was complete, the solution was filtered through Celite and the solvents removed in vacuo using a rotary evaporator. The dry, crude residue was dissolved in a small amount of a mixture of 60% (v/v) acetonitrile/water (ca. 10 mL), and the solution filtered through a 0.2 μm nylon syringe filter. Final purification was achieved by mass-guided preparative HPLC. After lyophilization of the solvents, 0.646 g (80% yield) of the title compound (17) was obtained as a white solid. M.p: 132.9-134.4° C. 1H NMR (CDCl3, 400 MHz): δ=7.31 (t, 2H), 7.19 (t, 3H), 6.82 (q, 1H), 6.38 (s, 0.3H), 5.50 (s, 0.7H), 2.99 (t, 2H), 2.72 (m, 2H), 1.71 (m, 2H), 1.42 (d, 3H), 1.30 (m, 2H). MS (ESI) m/z 343.93 (M+Na)+, 319.96 (M−H)−.

後処理

  1. customA dry 100 mL round-bottomed flask equipped with a magnetic stir bar
  2. customat room temperature
  3. filtrationthe solution was filtered through Celite
  4. customthe solvents removed in vacuo
  5. customa rotary evaporator
  6. dissolutionThe dry, crude residue was dissolved in a small amount of a mixture of 60% (v/v) acetonitrile/water (ca. 10 mL)
  7. filtrationthe solution filtered through a 0.2 μm nylon syringe
  8. filtrationfilter
  9. customFinal purification

出典と根拠

ORDレコード
ord-7ff0656ebe8148339b6ebff22a735c9b
出典データセット
uspto-grants-2009_05
特許番号
US07531572B2

反応ノート

読み込み中…