Dimethyl Sulfate → Solvent Red 111

HRID 2051376

Reaktionsgleichung

Reaktionsgleichung von HRID 2051376
[NH2:1][C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7](=[O:17])[C:6]=2[CH:5]=[CH:4][CH:3]=1.[OH-].[K+].[CH3:20]OS(=O)(=O)OC>[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C(O)(=O)C.ClC1C=CC=CC=1.O>[CH3:20][NH:1][C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7](=[O:17])[C:6]=2[CH:5]=[CH:4][CH:3]=1

Komponenten

8

Edukt 3

HCID 6497Dimethyl SulfateHCID 67101-AminoanthraquinoneHCID 14797Potassium Hydroxide

Produkt 1

HCID 6706Solvent Red 111Ausbeute 99,5 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 176Acetic AcidKatalysatorHCID 74236Tetrabutylammonium BromideKatalysatorHCID 962WaterLösungsmittelHCID 7964ChlorobenzeneLösungsmittel2×

Reaktionsbedingungen

Temperatur
30 °C

Versuchsvorschrift

A mixture of 1-aminoanthraquinone (purity 99.6%, 22.4 g), monochlorobenzene (224 g), tetra-n-butyl ammonium bromide (3.4 g), 96% potassium hydroxide (11.7 g) and dimethylsulfuric acid (25 g) was stirred while being maintained at 30° C. for 24 hours. After water (150 g) was added, the solution was stirred for 1 hour, being maintained at 50° C. pH of the aqueous phase was 10 or higher. Then, acetic acid (0.5 g) was added for neutralization (pH of the aqueous phase being 7) and then monochlorobenzene was recovered by heating. After being cooled down to 50° C., the solution was filtered, and a solid was washed and then dried to obtain 1-methylaminoanthraquinone (23.7 g, purity 97.6%, yield 97.6%).

Aufarbeitung

  1. stirringthe solution was stirred for 1 hour
  2. temperaturebeing maintained at 50° C. pH of the aqueous phase
  3. customwas recovered
  4. temperatureby heating
  5. temperatureAfter being cooled down to 50° C.
  6. filtrationthe solution was filtered
  7. washa solid was washed
  8. customdried

Quellen und Nachweise

ORD-Eintrag
ord-b59bfb58a7da4815814fd5d40c8f0650
Quelldatensatz
uspto-grants-1991_05
Patentnummer
US05017713

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