Benzoyl chloride → 1h-Indole-1-carboxylic acid,5-(benzoylamino)-2,3-dihydro-,1,1-dimethylethyl ester

HRID 2361892Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2361892
[C:1](Cl)(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:10]([O:14][C:15]([N:17]1[C:25]2[C:20](=[CH:21][C:22]([NH2:26])=[CH:23][CH:24]=2)[CH2:19][CH2:18]1)=[O:16])([CH3:13])([CH3:12])[CH3:11].C(N(CC)CC)C>ClCCl>[C:10]([O:14][C:15]([N:17]1[C:25]2[C:20](=[CH:21][C:22]([NH:26][C:1](=[O:8])[C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)=[CH:23][CH:24]=2)[CH2:19][CH2:18]1)=[O:16])([CH3:13])([CH3:11])[CH3:12]

Komponenten

5

Edukt 3

HCID 7412Benzoyl chlorideHCID 8471TriethylamineHCID 22240520tert-Butyl 5-amino-2,3-dihydro-1H-indole-1-carboxylate

Produkt 1

HCID 668890921h-Indole-1-carboxylic acid,5-(benzoylamino)-2,3-dihydro-,1,1-dimethylethyl esterAusbeute 100 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

Benzoyl chloride (305 μL, 1.5 eq.) was added to a solution of 5-amino-2,3-dihydro-indole-1-carboxylic acid tert-butyl ester (407 mg, 1.74 mmol) and triethylamine (1.2 mL, 5.0 eq.) in dichloromethane (5 mL) at 0° C. and the resulting mixture was stirred for 15 min. The reaction was then quenched by addition of sat. NaHCO3 and the mixture was extracted with 3×EtOAc. The combined extracts were dried over Na2SO4, filtered, concentrated and the product was purified by chromatography (20 to 100% EtOAc-hexanes) to give 5-benzoylamino-2,3-dihydro-indole-1-carboxylic acid tert-butyl ester (588 mg, 100%).

Aufarbeitung

  1. customThe reaction was then quenched by addition of sat. NaHCO3
  2. extractionthe mixture was extracted with 3×EtOAc
  3. dry with materialThe combined extracts were dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customthe product was purified by chromatography (20 to 100% EtOAc-hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-01530f990359419da463bec4ae28127b
Quelldatensatz
uspto-grants-2014_04
Patentnummer
US08691814B2

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