Water → HCID 22107244, Verbindung

Reaktionsgleichung

[CH:1]1([C:7]2[CH:22]=[CH:21][CH:20]=[CH:19][C:8]=2[O:9][C:10]2[CH:18]=[CH:17][CH:16]=[CH:15][C:11]=2C(O)=O)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[C:23](=[O:26])([O-])[O-].[Na+].[Na+].O>CO>[CH:1]1([C:7]2[C:8]3[O:9][C:10]4[C:11](=[CH:15][CH:16]=[CH:17][CH:18]=4)[C:23](=[O:26])[C:19]=3[CH:20]=[CH:21][CH:22]=2)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Komponenten

Versuchsvorschrift

A mixture of 18.4 g (65 mmol) of 2-(2-cyclohexylphenoxy)benzoic acid and 190 g of polyphosphoric acid is kept at 100° C. for 2 hours. The reaction mixture is then diluted with 200 ml of methanol, neutralized with sodium carbonate and poured onto about 800 ml of water. The product which has precipitated is filtered off, washed with water and dried under a high vacuum. 14.6 g (77%) of 4-cyclohexylxanthone, melting point 122°-124° C., result as a beige powder.