N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-2-formylbenzenesulfonamide → N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-2-ethenylbenzenesulfonamide

HRID 1164175Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1164175
C([Li])CCC.[Br-].C1([C:13]([PH3+])([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[C:14]2C=CC=CC=2)C=CC=CC=1.[CH3:27][O:28][C:29]1[CH:34]=[C:33]([O:35][CH3:36])[N:32]=[C:31]([NH:37][C:38]([NH:40][S:41](C2C=CC=CC=2C=O)(=[O:43])=[O:42])=[O:39])[N:30]=1>O1CCCC1>[CH3:27][O:28][C:29]1[CH:34]=[C:33]([O:35][CH3:36])[N:32]=[C:31]([NH:37][C:38]([NH:40][S:41]([C:25]2[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=2[CH:13]=[CH2:14])(=[O:42])=[O:43])=[O:39])[N:30]=1

Komponenten

5

Edukt 3

HCID 13097377N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-2-formylbenzenesulfonamideHCID 21951224Triphenylmethyl phosphonium bromideHCID 178418339Butyllithium

Produkt 1

HCID 13772105N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-2-ethenylbenzenesulfonamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a stirred mixture of 0.02 mol of n-butyllithium in 20 ml of anhydrous tetrahydrofuran is added 3.6 g of triphenylmethylphosphonium bromide. The above solution is stirred at room temperature for 4 hours. A slurry of 3.7 g of N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-2-formylbenzenesulfonamide in 30 ml of dry tetrahydrofuran is then added dropwise. The resulting mixture is refluxed overnight and allowed to cool to room temperature. The precipitate is removed by suction filtration and washed with methylene chloride. The combined filtrates are washed with dilute hydrochloric acid, water, dried and evaporated to dryness to yield the desired product.

Aufarbeitung

  1. temperatureThe resulting mixture is refluxed overnight
  2. temperatureto cool to room temperature
  3. customThe precipitate is removed by suction filtration
  4. washwashed with methylene chloride
  5. washThe combined filtrates are washed with dilute hydrochloric acid, water
  6. customdried
  7. customevaporated to dryness

Quellen und Nachweise

ORD-Eintrag
ord-e2a22f75e2b74c128642ff30f6973274
Quelldatensatz
uspto-grants-1983_01
Patentnummer
US04368069

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