Hydrochloric Acid → 2-(1,3-Dioxolan-2-yl)ethyl 2-(4,6-dimethoxypyrimidin-2-yl)oxybenzoate

HRID 488064

Reaktionsgleichung

Reaktionsgleichung von HRID 488064
[H-].[Na+].[CH3:3][O:4][C:5]1[CH:10]=[C:9]([O:11][CH3:12])[N:8]=[C:7]([O:13][C:14]2[CH:22]=[CH:21][CH:20]=[CH:19][C:15]=2[C:16]([OH:18])=[O:17])[N:6]=1.Br[CH2:24][CH2:25][CH:26]1[O:30][CH2:29][CH2:28][O:27]1.Cl>C(Cl)(Cl)Cl.CN(C)C=O>[CH3:12][O:11][C:9]1[CH:10]=[C:5]([O:4][CH3:3])[N:6]=[C:7]([O:13][C:14]2[CH:22]=[CH:21][CH:20]=[CH:19][C:15]=2[C:16]([O:18][CH2:24][CH2:25][CH:26]2[O:30][CH2:29][CH2:28][O:27]2)=[O:17])[N:8]=1

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 877762-(2-Bromoethyl)-1,3-dioxolaneHCID 1841852-((4,6-Dimethoxypyrimidin-2-yl)oxy)benzoic acid

Produkt 1

HCID 152782372-(1,3-Dioxolan-2-yl)ethyl 2-(4,6-dimethoxypyrimidin-2-yl)oxybenzoateAusbeute 63,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6212ChloroformLösungsmittelHCID 6228DimethylformamideLösungsmittel3×

Versuchsvorschrift

10 Milliliters of N,N-dimethylformamide in which 0.22 g of 60% sodium hydride in oil has been suspended was mixed with 5 ml of N,N-dimethylformamide solution of 1.38 g of 2-(4,6-dimethoxypyrimidin-2-yl)oxy benzoic acid. After stirring the mixture at room temperature for 30 minutes, 10 ml of N,N-dimethylformamide solution of 1.81 g of 2-(2-bromoethyl)-1,3-dioxolane was added thereto. The resulting solution was stirred at 100° to 110° C. for 2 hours. The reaction solution was allowed to cool, poured into diluted hydrochloric acid, and extracted with ethyl acetate. The organic layer separated from the aqueous layer was washed with saturated sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue obtained was subjected to silica gel column chromatography (mfd. by Merck & Co., Inc., solvent: chloroform) to obtain 1.20 g of 2-(1,3-dioxolan-2-yl)ethyl 2-(4,6-dimethoxypyrimidin-2-yl)oxybenzoate [present compound (V-2)].

Aufarbeitung

  1. stirringThe resulting solution was stirred at 100° to 110° C. for 2 hours
  2. temperatureto cool
  3. extractionextracted with ethyl acetate
  4. customThe organic layer separated from the aqueous layer
  5. washwas washed with saturated sodium chloride solution
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customThe solvent was removed under reduced pressure
  8. customthe residue obtained

Quellen und Nachweise

ORD-Eintrag
ord-57289cd2ff5e490b8cb79b1e767d633f
Quelldatensatz
uspto-grants-1994_03
Patentnummer
US05298632

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