6-Hydroxy-2-(2-nitrophenyl)-chroman-4-one → 2-(2-Nitrophenyl)chroman-4,6-diol
Reaktionsgleichung
C1(C2CC(O)C3C(=CC=C(O)C=3)O2)C=CC=CC=1.[OH:19][C:20]1[CH:21]=[C:22]2[C:27](=[CH:28][CH:29]=1)[O:26][CH:25]([C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][C:31]=1[N+:36]([O-:38])=[O:37])[CH2:24][C:23]2=[O:39]>>[N+:36]([C:31]1[CH:32]=[CH:33][CH:34]=[CH:35][C:30]=1[CH:25]1[CH2:24][CH:23]([OH:39])[C:22]2[C:27](=[CH:28][CH:29]=[C:20]([OH:19])[CH:21]=2)[O:26]1)([O-:38])=[O:37]Komponenten
3
Versuchsvorschrift
2-(2-Nitrophenyl)chroman-4,6-diol was prepared as described for 2-phenylchroman-4,6-diol in Example 8(a) starting from 6-hydroxy-2-(2-nitrophenyl)-chroman-4-one. 1H NMR (300 MHz, d6-DMSO) δ: 8.87 (s, 1H), 7.99-8.02 (m, 1H), 7.77-7.86 (m, 2H), 7.59-7.64 (m, 1H), 6.89 (d, 1H, J 2.4 Hz), 6.56-6.57 (m, 2H), 5.51-5.55 (m, 2H), 4.85-4.92 (m, 1H), 2.42-2.47 (m, 1H), 1.85-1.96 (m, 1H).
Quellen und Nachweise
- ORD-Eintrag
- ord-1b2cd9a6c463471fbeae13e9c524c28c
- Quelldatensatz
- uspto-grants-2008_09