Diisopropylethylamine → Methyl 6-[[bis(2-biphenylcarbonyl)]amino]pyridine-3-carboxylate

HRID 1735225Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1735225
[NH2:1][C:2]1[N:7]=[CH:6][C:5]([C:8]([O:10][CH3:11])=[O:9])=[CH:4][CH:3]=1.C(N([CH:18]([CH3:20])[CH3:19])CC)(C)C.[C:21]1([C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)[C:22]([C:27](Cl)=[O:28])=[CH:23][CH:24]=[CH:25][CH:26]=1>ClCCl.O>[C:23]1([C:19]2[CH:18]=[CH:20][CH:35]=[CH:30][CH:31]=2)[C:22]([C:27]([N:1]([C:27]([C:22]2[C:21]([C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)=[CH:26][CH:25]=[CH:24][CH:23]=2)=[O:28])[C:2]2[N:7]=[CH:6][C:5]([C:8]([O:10][CH3:11])=[O:9])=[CH:4][CH:3]=2)=[O:28])=[CH:21][CH:26]=[CH:25][CH:24]=1

Komponenten

6

Edukt 3

HCID 81531DiisopropylethylamineHCID 737487Methyl 6-aminonicotinateHCID 12563768[1,1'-Biphenyl]-2-carbonyl chloride

Produkt 1

HCID 22099573Methyl 6-[[bis(2-biphenylcarbonyl)]amino]pyridine-3-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6344DichloromethaneLösungsmittel3×

Versuchsvorschrift

To a chilled (0° C.) solution of 2.64 g of methyl 6-aminopyridine-3-carboxylate and 5.5 ml of diisopropylethylamine in 30 ml of dichloromethane under argon is added 6.8 g of 2-biphenylcarbonyl chloride in 10 ml of dichloromethane. The mixture is stirred at room temperature 2 days and then diluted with 120 ml of dichloromethane and 50 ml of water. The organic layer is separated, washed with 50 ml each of 1M NaHCO3 and brine and dried (Na2SO4). The solution is filtered through a thin pad of hydrous magnesium silicate and the filtrate concentrated under vacuum to give a solid. Crystallization from ethyl acetate gives 6.2 g of white crystals, m.p. 180°-188° C.

Aufarbeitung

  1. customThe organic layer is separated
  2. washwashed with 50 ml each of 1M NaHCO3 and brine
  3. dry with materialdried (Na2SO4)
  4. filtrationThe solution is filtered through a thin pad of hydrous magnesium silicate
  5. concentrationthe filtrate concentrated under vacuum
  6. customto give a solid
  7. customCrystallization from ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-d95a46d8449a4f41919af8ad6ece98a6
Quelldatensatz
uspto-grants-1996_07
Patentnummer
US05536718

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