Hydrochloric Acid → HCID 65197583, Verbindung

HRID 555175Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 555175
[CH2:1]([Mg]Br)[CH3:2].[CH3:5][N:6]1[CH:10]=[CH:9][C:8]([C:11]#[N:12])=[N:7]1.B(F)(F)F.CCOCC.Cl.[OH-].[Na+]>CCOCC>[CH3:5][N:6]1[CH:10]=[CH:9][C:8]([C:11]2([NH2:12])[CH2:2][CH2:1]2)=[N:7]1

Komponenten

7

Edukt 5

HCID 313Hydrochloric AcidHCID 8000Boron trifluoride etherateHCID 14798Sodium HydroxideHCID 127475101-Methyl-1H-pyrazole-3-carbonitrileHCID 178418443HCID 178418443, Verbindung

Produkt 1

HCID 65197583HCID 65197583, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel2×

Versuchsvorschrift

Ethyl magnesium bromide (2.5 mol, 1 M in ether) was added at −78° C. to a solution of a 1-methyl-1H-pyrazole-3-carbonitrile (0.5 g, 1 mmol) and Ti(Oi-Pr)4 (1.1 mmol) in Et2O (5 mL). The yellow solution was stirred for 10 min. After the solution was warmed to ambient temperature (1 h), BF3.OEt2 (2 mmol) was added. After the mixture was stirred for 1 h, 1 N HCl and ether were added. NaOH (10%) was added to the resulting two clear phases and the mixture was extracted with ether. The combined ether layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (Et2O). 1H NMR (400 MHz, CDCl3): δ 0.94-1.05 (m, 4H), 2.32 (s, 2H), 3.83 (s, 3H), 5.92 (d, 1H), 7.23-7.24 (d, 1H). LCMS: (ES+) m/z observed 137.7.

Aufarbeitung

  1. additionwas added
  2. stirringAfter the mixture was stirred for 1 h
  3. extractionthe mixture was extracted with ether
  4. dry with materialThe combined ether layers were dried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by flash chromatography on silica gel (Et2O)

Quellen und Nachweise

ORD-Eintrag
ord-7ef8ddac3b5d4577b383fc4d3620b02c
Quelldatensatz
uspto-grants-2011_11
Patentnummer
US08048887B2

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