Aluminium lithium hydride → 4-(Difluoromethyl)benzenemethanol
Reaktionsgleichung
[H-].[H-].[H-].[H-].[Li+].[Al+3].[F:7][CH:8]([F:19])[C:9]1[CH:18]=[CH:17][C:12]([C:13](OC)=[O:14])=[CH:11][CH:10]=1>C1COCC1>[F:7][CH:8]([F:19])[C:9]1[CH:10]=[CH:11][C:12]([CH2:13][OH:14])=[CH:17][CH:18]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of LAH (1.0 M in THF, 31 mL, 31 mmol) was added dropwise to a solution of Example 38A (5.82 g, 31.3 mmol) in THF (100 mL) at 0° C. The reaction was stirred for 1 hr, then quenched by careful addition of solid Na2SO4.10H2O. The mixture was warmed to ambient temperature and stirred 30 min. Celite filter aid was added and the mixture was filtered. The filtrate was concentrated in vacuo to yield 4.02 g (81%) of the title compound as a colorless oil. 1H NMR (300 MHz, DMSO-d6) δ 7.52 (d, J=8.2, 2H), 7.48-7.41 (m, 2H), 7.00 (t, J=56.0, 1H), 5.30 (t, J=5.7, 1H), 4.55 (d, J=5.4, 2H).