Dimethyl Sulfate → Ethyl 4-methyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxylate

HRID 2352535Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2352535
S(OC)(O[CH3:5])(=O)=O.[OH:8][C:9]1[C:14]([C:15]([O:17][CH2:18][CH3:19])=[O:16])=[CH:13][N:12]=[C:11]2[CH:20]=[CH:21][S:22][C:10]=12.[OH-].[K+]>O>[CH3:5][N:12]1[CH:13]=[C:14]([C:15]([O:17][CH2:18][CH3:19])=[O:16])[C:9](=[O:8])[C:10]2[S:22][CH:21]=[CH:20][C:11]1=2

Komponenten

5

Edukt 3

HCID 6497Dimethyl SulfateHCID 14797Potassium HydroxideHCID 178469639HCID 178469639, Verbindung

Produkt 1

HCID 22250098Ethyl 4-methyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel2×

Versuchsvorschrift

Dimethyl sulphate (3.9 ml) was added to a stirred solution of ethyl 7-hydroxythieno[3,2-b]-pyridine-6-carboxylate (4.63 g) and potassium hydroxide (3.5 g) in water (50 ml) at 0°-5°. More water (20 ml) was added and the mixture was stirred at ambient temperature for 24 hours. The solid product was collected by filtration, washed with water and dried to give the novel compound ethyl 4-methyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxylate, m.p. 122°-128°.

Aufarbeitung

  1. filtrationThe solid product was collected by filtration
  2. washwashed with water
  3. customdried

Quellen und Nachweise

ORD-Eintrag
ord-64cf8c7b7c7f4cf4b4bb36f07678b950
Quelldatensatz
uspto-grants-1989_10
Patentnummer
US04877793

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