Toluene → (5-Vinyl-1,3-dihydro-isoindol-2-yl)-methanone

HRID 425212노트

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HRID 425212 반응식
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[CH2:7][N:6]([C:11](C1C=C(C(C)C)C(OC)=CC=1OC)=[O:12])[CH2:5]2.C([O-])([O-])=O.[Na+].[Na+].[C:32]1(C)C=CC=C[CH:33]=1>CO.O.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>[CH:32]([C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[CH2:7][N:6]([CH:11]=[O:12])[CH2:5]2)=[CH2:33]

참가 물질

7

반응물 3

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 57830188(5-Bromo-1,3-dihydro-isoindol-2-yl)-(5-isopropyl-2,4-dimethoxyphenyl)methanone

생성물 1

HCID 86616299(5-Vinyl-1,3-dihydro-isoindol-2-yl)-methanone

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 887Methanol용매HCID 962Water용매2회

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온도
80 °C

실험 절차

To (5-bromo-1,3-dihydro-isoindol-2-yl)-(5-isopropyl-2,4-dimethoxyphenyl)methanone (2.2 g, 5.44 mmol), and 2-vinyl-4,4,5,5-tetramethyl-1,3,2-dioxaboralane (1.2 ml, 6.53 mmol) in MeOH (25 ml) and toluene (25 ml) was added Na2CO3 in water (25 ml). The reaction was degassed, Pd(PPh3)4 (0.38 g, 0.05 mmol) added then heated at 80° C. overnight. The reaction was worked up by adding water and extracting with EtOAc (×3). The combined organic layers were washed with brine and dried over MgSO4. The product was filtered and evaporated to dryness then purified by flash column chromatography, gradient elution (ether:petrol) to yield 5-isopropyl-2,4-dimethoxy-phenyl)-(5-vinyl-1,3-dihydro-isoindol-2-yl)-methanone as a yellow oil (1.6 g). 1H NMR (Me-d3-OD) 7.47-7.15 (3H, m), 7.15 (1H, s), 6.82-6.72 (1H, m), 6.71 (1H, s), 5.79 (1H, dd), 5.24 (1H, dd), 4.90 (2H, d), 4.64 (2H, d), 3.93 (3H, s), 3.91 (3H, s), 3.27 (1H, sept), 1.23 (6H, d). MS: [M+H]+ 352.

후처리

  1. customThe reaction was degassed
  2. extractionextracting with EtOAc (×3)
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationThe product was filtered
  6. customevaporated to dryness
  7. customthen purified by flash column chromatography, gradient elution (ether:petrol)

출처 및 근거

ORD 기록
ord-aebc90c4a0684f138104c26a9b885d73
출처 데이터셋
uspto-grants-2012_01
특허 번호
US08106057B2

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