StartseiteMCPWorkbenchSkills
StartseiteWorkbenchBenachrichtigungenMein Bereich
llms.txt · MCP-AnleitungDatenschutz · Nutzungsbedingungen · Supportv1.8.0
  1. Startseite
  2. /Reaktion

2-(Tributylstannyl)pyridine → HCID 66599726, Verbindung

HRID 1889037
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1889037
Br[C:2]1[N:6]2[CH2:7][CH2:8][N:9]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:10][C:5]2=[N:4][N:3]=1.C([Sn](CCCC)(CCCC)[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][N:24]=1)CCC>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[N:24]1[CH:25]=[CH:26][CH:27]=[CH:28][C:23]=1[C:2]1[N:6]2[CH2:7][CH2:8][N:9]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:10][C:5]2=[N:4][N:3]=1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 2

HCID 6077842-(Tributylstannyl)pyridineHCID 17998723tert-butyl 3-bromo-5H,6H,7H,8H-(1,2,4)triazolo(4,3-a)pyrazine-7-carboxylate

Produkt 1

HCID 66599726HCID 66599726, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)Katalysator
HCID 178418397
HCID 178418397, Verbindung
Katalysator
HCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
130 °C

Versuchsvorschrift

To a solution of 1,1-dimethylethyl 3-bromo-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazine-7(8H)-carboxylate (200 mg, 0.660 mmol, commercially available) in 1,4-dioxane (2 mL), 2-(tributylstannanyl)pyridine (364 mg, 0.990 mmol) was added and mixture was degassed with a stream of argon for few minutes. Pd(Ph3P)4 (38.1 mg, 0.033 mmol) was then added followed by copper(I) iodide (39.2 mg, 0.206 mmol) and the mixture was submitted to microwave irradiation heating at 130° C. for 25 minutes until the reaction was complete by LCMS. Volatiles were removed under reduced pressure and the residue was purified by chromatography on silica gel (Snap 11 g NH column) eluting with a gradient from 0 to 100% ethyl acetate in iso-hexane (10CV) and then with 100% ethyl acetate (7CV). A colourless oil was obtained. The product was still impure and so was further purified by chromatography on silica gel (Si 5 g) eluting with a 80% ethyl acetate in iso hexane (5CV) and then with 10% MeOH in DCM (5 CV) then by chromatography on silica gel (Si column 5 g) eluting first with ethyl acetate (4CV) and then with 10% MeOH in DCM (6CV). Colourless oil was obtained of the desired product in 115 mg.

Aufarbeitung

  1. custommixture was degassed with a stream of argon for few minutes
  2. customirradiation
  3. customVolatiles were removed under reduced pressure
  4. customthe residue was purified by chromatography on silica gel (Snap 11 g NH column)
  5. washeluting with a gradient from 0 to 100% ethyl acetate in iso-hexane (10CV)
  6. customA colourless oil was obtained
  7. customso was further purified by chromatography on silica gel (Si 5 g)
  8. washeluting with a 80% ethyl acetate in iso hexane (5CV)
  9. washwith 10% MeOH in DCM (5 CV) then by chromatography on silica gel (Si column 5 g) eluting first with ethyl acetate (4CV)

Quellen und Nachweise

ORD-Eintrag
ord-322492452dc841e2800bd4af71db8f0c
Quelldatensatz
uspto-grants-2013_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08501946B2

Notizen zur Reaktion

Wird geladen…

Auf dieser SeiteKomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion