1,2-Dibromoethane → Ethyl 4'-(2-bromoethoxy)-3'-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphth-2-yl)biphenyl-4-carboxylate
Reaktionsgleichung
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:13]=[CH:12][C:11]([C:14]([O:16][CH2:17][CH3:18])=[O:15])=[CH:10][CH:9]=2)=[CH:4][C:3]=1[C:19]1[CH:28]=[CH:27][C:26]2[C:25]([CH3:30])([CH3:29])[CH2:24][CH2:23][C:22]([CH3:32])([CH3:31])[C:21]=2[CH:20]=1.[Br:33][CH2:34][CH2:35]Br>>[Br:33][CH2:34][CH2:35][O:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:9]=[CH:10][C:11]([C:14]([O:16][CH2:17][CH3:18])=[O:15])=[CH:12][CH:13]=2)=[CH:4][C:3]=1[C:19]1[CH:28]=[CH:27][C:26]2[C:25]([CH3:30])([CH3:29])[CH2:24][CH2:23][C:22]([CH3:31])([CH3:32])[C:21]=2[CH:20]=1Komponenten
3
Versuchsvorschrift
In a manner similar to that of Example 1a, by reaction of 6 g (14 mmol) of ethyl 4′-hydroxy-3′-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphth-2-yl)biphenyl-4-carboxylate with 4 ml (46.2 mmol) of 1,2-dibromoethane. 2.12 g of ethyl 4′-(2-bromoethoxy)-3′-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphth-2-yl)biphenyl-4-carboxylate are obtained in the form of a white solid (yield=28%).