1,4-Butanediol → 4-(2-Fluoro-5-bromobenzyloxy)butanol
Reaktionsgleichung
[OH:1][CH2:2][CH2:3][CH2:4][CH2:5][OH:6].[H-].[Na+].[F:9][C:10]1[CH:17]=[CH:16][C:15]([Br:18])=[CH:14][C:11]=1[CH2:12]Br>CN(C)C=O>[F:9][C:10]1[CH:17]=[CH:16][C:15]([Br:18])=[CH:14][C:11]=1[CH2:12][O:1][CH2:2][CH2:3][CH2:4][CH2:5][OH:6]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of 1,4-dihydroxybutane (4.0 ml, 45.13 mmol) in N,N-dimethylformamide (62 ml) was treated with sodium hydride (1.98 g of a 60% solution, 49.63 mmol), and stirred for about 50 minutes at ambient temperature. The resulting mixture was cooled to 0° C. and treated with 2-fluoro-5-bromobenzyl bromide (3.0 g, 11.28 mmol). The reaction mixture was then stirred for four hours at ambient temperature. The reaction was quenched with water. The aqueous fraction was extracted with methylene chloride. The organic fractions were combined, and dried over sodium sulfate. The solvents were removed in vacuo. The desired title intermediate was further purified by high performance liquid chromatography.