Hydrochloric Acid → Naphthalic acid

HRID 1995183

Reaktionsgleichung

Reaktionsgleichung von HRID 1995183
[C:1]1([C:11]([OH:13])=[O:12])[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.N[C:15](N)=[O:16].[OH2:18].Cl>CCOCCO.C([O-])(=O)C.[Cr+3].C([O-])(=O)C.C([O-])(=O)C>[CH:3]1[CH:2]=[C:1]([C:11]([OH:13])=[O:12])[C:10]2[C:9]([C:15]([OH:16])=[O:18])=[CH:8][CH:7]=[CH:6][C:5]=2[CH:4]=1

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 1176UreaHCID 68471-Naphthoic acid

Produkt 1

HCID 68204Naphthalic acid

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 14012Chromium(III) acetateKatalysatorHCID 8076Glycol monoethyl etherLösungsmittel

Reaktionsbedingungen

Temperatur
30 °C

Versuchsvorschrift

A 86.5 g quantity of naphthalic acid (i.e., 1,8-naphthalic acid or 1,8-naphthalene dicarboxylic acid) was dissolved in 300 g of ethyl cellosolve, and chromium acetate (0.2 equivalent calculated as atomic weight of Cr) and 30 g of urea were added to the solution. The mixture was stirred at 100° to 115° C. for 2 hours. The reaction mixture was in the form of a bluish green supernatent liquid. The mixture was cooled to 30° C. and placed into 1 liter of water containing 60 g of 35% hydrochloric acid, whereby a pale bluish green precipitate was formed. The precipitate was filtered off and washed with water until the pH thereof became 6 to 7. The precipitate was dried to give 95 g of Cr complex compound of 1,8-naphthalic acid (hereinafter referred to as "Complex Compound 2"). Complex Compound 2 was found to have good thermal stability (as tested at temperatures of below 350° C. in the same manner as described in Example 1).

Aufarbeitung

  1. customwas formed
  2. filtrationThe precipitate was filtered off
  3. washwashed with water until the pH
  4. customThe precipitate was dried

Quellen und Nachweise

ORD-Eintrag
ord-5083c59b4b06484f9bada5f99b3dfa63
Quelldatensatz
uspto-grants-1983_09
Patentnummer
US04403027

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