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Diisopropylethylamine → 2-ethyl-4-methyl-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)oxazole-5-carboxamide

HRID 881734
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 881734
[CH3:1][C:2]1([CH3:16])[C:6]([CH3:8])([CH3:7])[O:5][B:4]([C:9]2[CH:15]=[CH:14][C:12]([NH2:13])=[CH:11][CH:10]=2)[O:3]1.[CH2:17]([C:19]1[O:20][C:21]([C:25](O)=[O:26])=[C:22]([CH3:24])[N:23]=1)[CH3:18].CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.[Cl-].[Na+].O.O>[CH2:17]([C:19]1[O:20][C:21]([C:25]([NH:13][C:12]2[CH:14]=[CH:15][C:9]([B:4]3[O:3][C:2]([CH3:16])([CH3:1])[C:6]([CH3:7])([CH3:8])[O:5]3)=[CH:10][CH:11]=2)=[O:26])=[C:22]([CH3:24])[N:23]=1)[CH3:18]
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Komponenten

8

Edukt 4

HCID 81531DiisopropylethylamineHCID 27346204-(Tetramethyl-1,3,2-dioxaborolan-2-yl)anilineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 138352982-Ethyl-4-methyl-1,3-oxazole-5-carboxylic acid

Produkt 1

HCID 86700839
2-ethyl-4-methyl-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)oxazole-5-carboxamide
Ausbeute 52,1 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittelHCID 57417360Sodium chloride; waterLösungsmittel

Versuchsvorschrift

To a stirred solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) aniline (360 mg, 1.643 mmol) in anhydrous DMF (8.2 mL) was added 2-ethyl-4-methyloxazole-5-carboxylic acid (306 mg, 1.972 mmol), followed by DIPEA (0.86 mL, 4.93 mmol) and the mixture was stirred at room temperature for 10 minutes. HATU (750 mg, 1.972 mmol) was added and the mixture was stirred at room temperature for 16 hour. The mixture was taken up in 1:1 mixture of brine and water (40 mL) and extracted with EtOAc (60 mL). The organic portion was dried over sodium sulfate, filtered and concentrated to afford a brown oil, which was purified by flash column chromatography to afford the title compound (305 mg, 52% yield) as a white solid. LC/MS, ESI-MS (+): 357.1, RT: 1.35 (Condition E).

Aufarbeitung

  1. stirringthe mixture was stirred at room temperature for 16 hour
  2. extractionextracted with EtOAc (60 mL)
  3. dry with materialThe organic portion was dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto afford a brown oil, which
  7. customwas purified by flash column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-176d063d63844eac8fbeb4ca21546df7
Quelldatensatz
uspto-grants-2015_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08993619B2

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