1,1'-Carbonyldiimidazole → HCID 14277653, Verbindung

HRID 1200020

Reaktionsgleichung

Reaktionsgleichung von HRID 1200020
[CH3:1][O:2][C:3]1[CH:19]=[CH:18][C:6]([CH2:7][S:8][C:9]2[C:14]([C:15]([OH:17])=[O:16])=[CH:13][N:12]=[CH:11][CH:10]=2)=[CH:5][CH:4]=1.[C:20](N1C=CN=C1)(N1C=CN=C1)=O.C[O-].[Na+]>CN(C)C=O.CO>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([CH2:7][S:8][C:9]2[C:14]([C:15]([O:17][CH3:20])=[O:16])=[CH:13][N:12]=[CH:11][CH:10]=2)=[CH:18][CH:19]=1

Komponenten

6

Edukt 3

HCID 682631,1'-CarbonyldiimidazoleHCID 10942334Sodium MethoxideHCID 142776524-(4-Methoxybenzylthio)nicotinic acid

Produkt 1

HCID 14277653HCID 14277653, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolLösungsmittel2×HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A suspension of 2.2 g (0.008 mole) of 4-(4-methoxybenzylthio)-nicotinic acid in 30 mL of dry N,N-dimethylformamide was reacted with 1.78 g (0.011 mole) of 1,1'-carbonyldiimidazole. This was stirred at room temperature for 2 hours, then 0.5 mL of 4.3M sodium methoxide in methanol and 5 mL of methanol. The reaction was stirred for 1 hour at room temperature, then partitioned between 75 mL of ether and 30 mL of water. The ether layer was extracted with 2×30 mL of water, dried, concentrated to a small volume, and hexane added to crystallize methyl 4-(4-methoxybenzylthio) nicotinate; yield 1.66 g (72% of theory), m.p. 108°-110° C.

Aufarbeitung

  1. stirringThe reaction was stirred for 1 hour at room temperature
  2. custompartitioned between 75 mL of ether and 30 mL of water
  3. extractionThe ether layer was extracted with 2×30 mL of water
  4. customdried
  5. concentrationconcentrated to a small volume, and hexane
  6. additionadded
  7. customto crystallize methyl 4-(4-methoxybenzylthio) nicotinate

Quellen und Nachweise

ORD-Eintrag
ord-edfa1c563d7c40a28b6e546ab684787b
Quelldatensatz
uspto-grants-1990_02
Patentnummer
US04904672

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