Sodium Bicarbonate → Chromone

HRID 1090780Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1090780
C([C:7]1[O:8][C:9]2[CH:17]=[CH:16][C:15](OCC3C=CC=C(OCC4C=CC5C(=CC=CC=5)N=4)C=3)=[CH:14][C:10]=2[C:11](=[O:13])[CH:12]=1)(OCCC)=O.C(=O)(O)[O-].[Na+]>C(O)C.O>[O:13]=[C:11]1[C:10]2[CH:14]=[CH:15][CH:16]=[CH:17][C:9]=2[O:8][CH:7]=[CH:12]1

Komponenten

5

Versuchsvorschrift

A mixture of 0.71g of 2-carbopropoxy-6-(3-(quinolin-2-yl-methoxy)benzyloxy)-4-oxo-4H-1-benzopyran and 0.45g of sodium bicarbonate in 20 ml of ethanol in 20 ml of water is refluxed for 1.5 hours, then stirred at room temperature overnight. The mixture was neutralized and the resulting solid is filtered off, washed with water and dried in vacuo to give 0.55g of 2-carboxy-6-(3-quinolin-2- ylmethoxy)benzyloxy)-4-oxo-4H-1-benzopyran as a light yellow solid having an m.p. of 253°-54° C.

Aufarbeitung

  1. temperatureis refluxed for 1.5 hours
  2. filtrationthe resulting solid is filtered off
  3. washwashed with water
  4. customdried in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-1ee73434b9db4f5289f5098d1b7d2d95
Quelldatensatz
uspto-grants-1992_01
Patentnummer
US05082849

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