Pyridine → N-[3-Bromo-6-(methyloxy)-2-pyridinyl]-2,2-dimethyl-N-[(2-oxo-1,3-dioxolan-4-yl)methyl]propanamide

HRID 1943133Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1943133
[Br:1][C:2]1[C:3]([N:10]([CH2:17][CH:18]([OH:21])[CH2:19][OH:20])[C:11](=[O:16])[C:12]([CH3:15])([CH3:14])[CH3:13])=[N:4][C:5]([O:8][CH3:9])=[CH:6][CH:7]=1.N1C=CC=CC=1.Cl[C:29](Cl)([O:31]C(=O)OC(Cl)(Cl)Cl)Cl.C(=O)(O)[O-].[Na+]>C(Cl)Cl>[Br:1][C:2]1[C:3]([N:10]([CH2:17][CH:18]2[CH2:19][O:20][C:29](=[O:31])[O:21]2)[C:11](=[O:16])[C:12]([CH3:15])([CH3:14])[CH3:13])=[N:4][C:5]([O:8][CH3:9])=[CH:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 1049PyridineHCID 94429TriphosgeneHCID 516892Sodium BicarbonateHCID 68597756N-[3-bromo-6-(methyloxy)-2-pyridinyl]-N-(2,3-dihydroxypropyl)-2,2-dimethylpropanamide

Produkt 1

HCID 68597433N-[3-Bromo-6-(methyloxy)-2-pyridinyl]-2,2-dimethyl-N-[(2-oxo-1,3-dioxolan-4-yl)methyl]propanamideAusbeute 70 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

A solution of N-[3-bromo-6-(methyloxy)-2-pyridinyl]-N-(2,3-dihydroxypropyl)-2,2-dimethylpropanamide (7.628 g, 21.130 mmol) in DCM (100 ml) and pyridine (3.407 ml, 42.26 mmol) at −78° C. under argon was treated with a solution of triphosgene (6.27 g, 21.130 mmol) in DCM (20 ml) over 5 min and the reaction was then allowed warm to rt and stirred at rt for 30 min. The reaction was then carefully treated with saturated sodium bicarbonate solution (200 ml), extracted with DCM (3×200 ml). The organic extracts were dried (MgSO4), and evaporated and chromatographed (0-50% ethyl acetate:Hexane) to give the product as a white solid (5.722 g, 70%).

Aufarbeitung

  1. extractionextracted with DCM (3×200 ml)
  2. dry with materialThe organic extracts were dried (MgSO4)
  3. customevaporated
  4. customchromatographed (0-50% ethyl acetate:Hexane)

Quellen und Nachweise

ORD-Eintrag
ord-cda57d0585994b8f90180d657abbf0b1
Quelldatensatz
uspto-grants-2013_03
Patentnummer
US08389524B2

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