5-Bromo-2,4-dimethoxybenzaldehyde → 2-(5-Formyl-2,4-dimethoxyphenyl)indole-1-carboxylic acid tert-butyl ester
Reaktionsgleichung
Br[C:2]1[C:3]([O:12][CH3:13])=[CH:4][C:5]([O:10][CH3:11])=[C:6]([CH:9]=1)[CH:7]=[O:8].[C:14]([N:21]1[C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[CH:23]=[C:22]1B(O)O)([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15]>>[C:17]([O:16][C:14]([N:21]1[C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[CH:23]=[C:22]1[C:2]1[CH:9]=[C:6]([CH:7]=[O:8])[C:5]([O:10][CH3:11])=[CH:4][C:3]=1[O:12][CH3:13])=[O:15])([CH3:20])([CH3:18])[CH3:19]Komponenten
3
Versuchsvorschrift
Ex-36A: 2-(5-Formyl-2,4-dimethoxy-phenyl)-indole-1-carboxylic acid tert-butyl ester was prepared from 5-bromo-2,4-dimethoxybenzaldehyde and N-Boc-indole-2-boronic acid in a similar manner as described in Ex-3A. Yellow oil, 79% yield. 1H-NMR (CDCl3) δ 10.36 (s, 1H), 8.15 (d, J=8 Hz, 1H), 7.88 (s, 1H), 7.45 (d, J=8 Hz, 3H), 7.27–7.35 (m, 1H), 7.19–7.27 (m, 1H), 6.52 (s, 1H), 6.47 (s, 1H), 4.00 (s, 3H), 3.86 (s, 3H), 1.42 (s, 9H).