Reaktionsgleichung
C[C:2]1[CH:15]=[CH:14][C:13]2[C:12](=[O:16])[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[C:5](=[O:17])[C:4]=2[CH:3]=1.O(Cl)Cl.[C:21]([Cl:25])(Cl)([Cl:23])[Cl:22]>>[Cl:22][C:21]([Cl:25])([Cl:23])[C:9]1[CH:8]=[CH:7][C:6]2[C:5](=[O:17])[C:4]3[C:13](=[CH:14][CH:15]=[CH:2][CH:3]=3)[C:12](=[O:16])[C:11]=2[CH:10]=1Komponenten
Versuchsvorschrift
2-Methylanthraquinone (5.89 g, 0.0265 mole) and dichlorine monoxide (5.77 g, 0.0664 mole) in carbon tetrachloride (70 ml) were heated in a Carrius tube as described in Example 6 at 75° for 20.25 hrs. The product which separated as a yellow crystalline solid was dissolved in methylene chloride and filtered to separate a solid (0.49 g) judged from its infrared spectra to be anthraquinone-2-carboxylic acid. The filtrate was dried (MgSO4) and the solvent removed on a rotary evaporator to give 2-trichloromethylanthraquinone as a yellow crystalline solid (8.49 g, purity by HPLC 94.26%; yield 92.5%). An aliquot of the product was recrystallized from carbon tetrachloride and then sublimed (0.1μ) to give pure anthraquinone-2-carboxylic acid, mp 157-158.2.
Aufarbeitung
- customThe product which separated as a yellow crystalline solid
- dissolutionwas dissolved in methylene chloride
- filtrationfiltered
- customto separate a solid (0.49 g)
- dry with materialThe filtrate was dried (MgSO4)
- customthe solvent removed on a rotary evaporator
Quellen und Nachweise
- ORD-Eintrag
- ord-c3d02c9386594155828c4f1f3dcf0bb0
- Quelldatensatz
- uspto-grants-1980_10
- Patentnummer
- US04226783
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