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Pyridine → 3-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}-N-(5-methylpyrazin-2-yl)-5-[(phenylmethyl)oxy]benzamide

HRID 548717
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 548717
C(Cl)(=O)C(Cl)=O.[CH3:7][O:8][CH2:9][C@@H:10]([O:12][C:13]1[CH:14]=[C:15]([CH:19]=[C:20]([O:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH:21]=1)[C:16]([OH:18])=O)[CH3:11].[NH2:30][C:31]1[CH:36]=[N:35][C:34]([CH3:37])=[CH:33][N:32]=1.N1C=CC=CC=1>C(Cl)Cl>[CH3:11][C@H:10]([O:12][C:13]1[CH:14]=[C:15]([CH:19]=[C:20]([O:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH:21]=1)[C:16]([NH:30][C:31]1[CH:36]=[N:35][C:34]([CH3:37])=[CH:33][N:32]=1)=[O:18])[CH2:9][O:8][CH3:7]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 1049PyridineHCID 65578Oxalyl chlorideHCID 3132155-Methylpyrazin-2-amineHCID 59127150Benzoic acid, 3-[(1S)-2-methoxy-1-methylethoxy]-5-(phenylmethoxy)-

Produkt 1

HCID 536296643-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}-N-(5-methylpyrazin-2-yl)-5-[(phenylmethyl)oxy]benzamideAusbeute 85,9 %

Reagenzien, Katalysatoren, Lösungsmittel

1
HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

Oxalyl chloride (2.1 mL, 24.0 mmol) was added to a solution of 3-[(1S)-2-methoxy-(1-methylethyl)oxy]-5-{[phenylmethyl]oxy}benzoic acid (6.32 g, 20.0 mmol) in DCM (100 mL) and the mixture stirred at RT for 4 hours. The mixture was evaporated in vacuo to a residue, which was taken up in DCM (25 mL) and added to a stirred mixture of 2-amino-5-methylpyrazine (2.29 g, 21.0 mmol) and pyridine (1.94 mL, 24.0 mmol) in DCM (100 mL) at 5° C.-10° C. The mixture was stirred at RT for 18 hours, the DCM evaporated in vacuo. The residue was partitioned between water (50 mL) and ethyl acetate (150 mL), the organic layer washed with brine, dried (MgSO4) and evaporated to a residue, which was chromatographed on silica, eluting with 50% ethyl acetate in isohexane, to give the desired compound (7.0 g). 1H NMR δ (CDCl3): 1.3 (d, 3H), 2.5 (s, 3H), 3.3 (s, 3H), 3.4-3.5 (m, 2H), 4.5 (m, 1H), 5.0 (s, 2H), 6.7 (s, 1H), 7.0 (s, 1H), 7.05 (s, 1H), 7.35 (m, 5H), 8.05 (s, 1H), 8.3 (s, 1H) and 9.5 (s, 1H). m/z 408 (M+H)+.

Aufarbeitung

  1. customThe mixture was evaporated in vacuo to a residue, which
  2. stirringThe mixture was stirred at RT for 18 hours
  3. customthe DCM evaporated in vacuo
  4. customThe residue was partitioned between water (50 mL) and ethyl acetate (150 mL)
  5. washthe organic layer washed with brine
  6. dry with materialdried (MgSO4)
  7. customevaporated to a residue, which
  8. customwas chromatographed on silica
  9. washeluting with 50% ethyl acetate in isohexane

Quellen und Nachweise

ORD-Eintrag
ord-bced08954ec44fd6a2a05b7327cc062a
Quelldatensatz
uspto-grants-2011_05
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07943607B2

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