3-Oxo-3-phenylpropionanilide → 3-Deoxyviridicatin
Reaktionsgleichung
[C:1]([CH2:9][C:10]([NH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=[O:11])(=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>S(=O)(=O)(O)O.O>[C:2]1([C:1]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[NH:12][C:10](=[O:11])[CH:9]=2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1Komponenten
4
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
Benzoylacetanilide (150 g) (prepared according to the method of Brown et al., J. Am. Chem. Soc., 79, 2919, (1957)) in concentrated sulphuric acid (76%) (130 cc) is heated for 4 hours at 100° C. The reaction mixture is slowly poured with stirring in distilled water (3150 cc). The precipitate obtained is filtered, washed with water and then with acetone, and dried at 40° C. under reduced pressure. The residue obtained is recrystallised in ethanol. (white solid; m.p.=268°-269° C.)