Hydrochloric Acid → HCID 20481738, Verbindung

HRID 127946

Reaktionsgleichung

Reaktionsgleichung von HRID 127946
[OH:1][C:2]1[CH:9]=[C:8]([OH:10])[CH:7]=[CH:6][C:3]=1[CH:4]=O.C([O:14][CH2:15][C:16]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)=O)(=O)C.[ClH:24]>C(OCC)(=O)C>[Cl-:24].[OH:14][C:15]1[C:16]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)=[O+:1][C:2]2[C:3]([CH:4]=1)=[CH:6][CH:7]=[C:8]([OH:10])[CH:9]=2

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 72132,4-DihydroxybenzaldehydeHCID 222851Ethanone, 2-(acetyloxy)-1-phenyl-

Produkt 1

HCID 20481738HCID 20481738, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

79 g of 2,4-dihydroxybenzaldehyde were dissolved at room temperature in 800 ml of anhydrous ethyl acetate and 106 g of omega-acetoxyacetophenone were added to the solution. The reaction mixture was brought to 0° C. under agitation and gaseous hydrochloric acid added to saturation. After standing for 24 hours at room temperature, crystallisation of the product began and it was filtered and dried at 40° C. in the presence of NaOH. There were obtained 95 g of 3,7-dihydroxyflavilium chloride.

Aufarbeitung

  1. additionadded to saturation
  2. customcrystallisation of the product
  3. filtrationit was filtered
  4. dry with materialdried at 40° C. in the presence of NaOH

Quellen und Nachweise

ORD-Eintrag
ord-5061ef8a3f24490ea5f4b54912055992
Quelldatensatz
uspto-grants-1981_03
Patentnummer
US04258055

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