Potassium Hydroxide → 2-bromo-6-nitrobenzyl (2E)-but-2-en-1-yl ether
Reaktionsgleichung
[OH-:1].[K+].[Br:3][C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([N+:10]([O-:12])=[O:11])[C:5]=1[CH2:13]Br>C(O)/C=C/C>[CH2:9]([O:1][CH2:13][C:5]1[C:6]([N+:10]([O-:12])=[O:11])=[CH:7][CH:8]=[CH:9][C:4]=1[Br:3])/[CH:4]=[CH:5]/[CH3:6]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of KOH (0.57 g, 0.099 mol) in (2E)-but-2-en-1-ol (100 mL) was added 1-bromo-2-(bromomethyl)-3-nitrobenzene (10 g, 0.033 mol), and the mixture was stirred at r.t for 30 min. Then the mixture was washed with water (200 mL*4), extracted with EtOAc, dried over Na2SO4, concentrated in vacuo. The residue was purified via chromatography (petrol ether) to give 2-bromo-6-nitrobenzyl (2E)-but-2-en-1-yl ether. 1H-NMR (400 MHz, CDCl3) δ 7.76 (d, J=8.0 Hz, 1H), 7.75 (d, J=8.0 Hz, 1H), 7.25˜7.30 (m, 1H), 5.68˜5.77 (m, 1H), 5.51˜5.58 (m, 1H), 4.82 (s, 2H), 1.69 (d, J=6.0 Hz, 3H).