Potassium Carbonate → HCID 68964456, Verbindung
Reaktionsgleichung
[CH2:1]([C:4]1[C:9]([F:10])=[CH:8][CH:7]=[C:6]([Br:11])[C:5]=1[OH:12])[CH:2]=[CH2:3].ClC1C=C(C=CC=1)C(OO)=[O:18].C(=O)([O-])[O-].[K+].[K+]>>[Br:11][C:6]1[C:5]2[O:12][CH:2]([CH2:3][OH:18])[CH2:1][C:4]=2[C:9]([F:10])=[CH:8][CH:7]=1Komponenten
4
Versuchsvorschrift
Treatment of 2-allyl-6-bromo-3-fluorophenol (9.01 g, 0.039 mol) with 3-chloroperoxybenzoic acid (77%, 13.46 g, 0.06 mol) followed by potassium carbonate (13.82 g, 0.10 mol) generally according to the reaction procedure described for Intermediate 9 gave 6.71 g (70%) of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methanol as a white solid. Rf=0.20 (silica, ethyl acetate:hexanes 1:4); mp 40-43° C.; Anal. calcd. for C9H8BrFO2.0.2H2O: C, 43.13; H, 3.38. Found: C, 42.94; H, 3.15.