Pyridine → (S)-N-(5-bromo-3-(2-methylpyridin-3-yloxy)pyridin-2-yl)-3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-amine

HRID 1511034Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1511034
[S:1]([N:5]=[C:6]=O)N=C=O.[Na].[N:9]1C=CC=C[CH:10]=1.CS(ON=C(Cl)[C@H:22]1[CH2:26][O:25][C:24]2([CH2:31][CH2:30][CH2:29][CH2:28][CH2:27]2)[O:23]1)(=O)=O.[Br:33][C:34]1[CH:35]=[C:36]([O:41][C:42]2[C:43]([CH3:48])=[N:44][CH:45]=[CH:46][CH:47]=2)[C:37]([NH2:40])=[N:38][CH:39]=1>C(#N)C>[Br:33][C:34]1[CH:35]=[C:36]([O:41][C:42]2[C:43]([CH3:48])=[N:44][CH:45]=[CH:46][CH:47]=2)[C:37]([NH:40][C:10]2[S:1][N:5]=[C:6]([C@H:26]3[CH2:22][O:23][C:24]4([CH2:27][CH2:28][CH2:29][CH2:30][CH2:31]4)[O:25]3)[N:9]=2)=[N:38][CH:39]=1

Komponenten

6

Edukt 4

HCID 1049PyridineHCID 674861815-Bromo-3-(2-methylpyridin-3-yloxy)pyridin-2-amineHCID 86644147(R)-N-(methylsulfonyloxy)-1,4-dioxaspiro[4.5]decane-2-carbimidoyl chlorideHCID 86644150Sodium thioisocyanate

Produkt 1

HCID 67486320(S)-N-(5-bromo-3-(2-methylpyridin-3-yloxy)pyridin-2-yl)-3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-amineAusbeute 73 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

In 100 mL of acetonitrile was added sodium thioisocyanate (1.5 g, 20 mmol), pyridine (3.5 g, 44 mmol), followed by (R)-N-(methylsulfonyloxy)-1,4-dioxaspiro[4.5]decane-2-carbimidoyl chloride (5.2 g, 18 mmol) and the reaction was heated to 60° C. for 30 minutes. 5-Bromo-3-(2-methylpyridin-3-yloxy)pyridin-2-amine (4.1 g, 15 mmol) was added and the reaction was heated overnight at 60° C. The reaction was concentrated to one fourth the volume and the residue partitioned between EtOAc and water made basic with 1N NaOH. The organic layer was separated and the aqueous layer extracted with EtOAc. The combined organic layers were washed with brine, dried over MgSO4 and concentrated in vacuo. The material was purified on silica gel (25% EtOAc in CH2Cl2) to afford (S)-N-(5-bromo-3-(2-methylpyridin-3-yloxy)pyridin-2-yl)-3-(1,4-dioxaspiro[4.5]decan-2-yl)-1,2,4-thiadiazol-5-amine (5.4 g, 73%).

Aufarbeitung

  1. temperaturethe reaction was heated overnight at 60° C
  2. concentrationThe reaction was concentrated to one fourth the volume
  3. customthe residue partitioned between EtOAc and water
  4. customThe organic layer was separated
  5. extractionthe aqueous layer extracted with EtOAc
  6. washThe combined organic layers were washed with brine
  7. dry with materialdried over MgSO4
  8. concentrationconcentrated in vacuo
  9. customThe material was purified on silica gel (25% EtOAc in CH2Cl2)

Quellen und Nachweise

ORD-Eintrag
ord-bdeef288939645f08ff44d08afb875fa
Quelldatensatz
uspto-grants-2012_07
Patentnummer
US08212045B2

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