Ethyl Acrylate → (4R,9aR)-6-(2-Ethoxycarbonyl-vinyl)-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester

HRID 11919

반응식

HRID 11919 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:20][C@@H:19]([CH3:21])[N:18]2[C@H:10]([CH2:11][C:12]3[C:17]2=[N:16][C:15](Br)=[CH:14][CH:13]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:23]([O:27][CH2:28][CH3:29])(=[O:26])[CH:24]=[CH2:25].C([O-])(=O)C.[Na+].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(=O)(O)[O-].[Na+]>C1(C)C=CC=CC=1.[CH2-]C=C.[CH2-]C=C.Cl[Pd+].Cl[Pd+]>[C:1]([O:5][C:6]([N:8]1[CH2:20][C@@H:19]([CH3:21])[N:18]2[C@H:10]([CH2:11][C:12]3[C:17]2=[N:16][C:15]([CH:25]=[CH:24][C:23]([O:27][CH2:28][CH3:29])=[O:26])=[CH:14][CH:13]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

참가 물질

8

반응물 5

HCID 8821Ethyl AcrylateHCID 80271Tri-o-tolylphosphineHCID 516892Sodium BicarbonateHCID 517045Sodium AcetateHCID 86590113(4R,9aR)-6-bromo-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester2회

생성물 1

HCID 69557653(4R,9aR)-6-(2-Ethoxycarbonyl-vinyl)-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester수율 91.2%

시약·촉매·용매 2

HCID 61538Palladium, di-mu-chlorobis(eta3-2-propenyl)di-촉매HCID 1140Toluene용매

실험 절차

To a solution of 1.0 g (2.71 mmol) (4R,9aR)-6-bromo-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester (Example 5, intermediate b) and 0.36 ml (3.25 mmol) ethyl acrylate in 30 ml toluene were added 0.67 g (8.15 mmol) sodium acetate, 82.6 mg (0.27 mmol) tri(o-tolyl)phosphine and 0.04 mg (0.1 mmol) allylpalladium chloride dimer. The reaction mixture was heated under reflux for 20 h, then poured into saturated aqueous sodium bicarbonate solution and extracted with ethyl acetate. The organic phase was washed with 10% aqueous citric acid solution and brine, dried over magnesium sulfate, filtered and evaporated. The crude product was purified by column chromatography on silica gel (0.032–0.063 mm) with n-hexane:ethyl acetate (9:1) as eluant to afford the desired compound as a yellow solid (91.2%).

후처리

  1. temperatureThe reaction mixture was heated
  2. temperatureunder reflux for 20 h
  3. extractionextracted with ethyl acetate
  4. washThe organic phase was washed with 10% aqueous citric acid solution and brine
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. customevaporated
  8. customThe crude product was purified by column chromatography on silica gel (0.032–0.063 mm) with n-hexane:ethyl acetate (9:1) as eluant

출처 및 근거

ORD 기록
ord-c7a4f3c997774bd4bc1869e396fb93b7
출처 데이터셋
uspto-grants-2006_08
특허 번호
US07098337B2

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