Reaktion #456330

Reaktionsgleichung

5-[(1,1'-biphenyl)-4-yl]-4-hydroxy-3-phenylmethoxy-5-phenyl-2(5H)-furanone

3,4-dihydroxy-5-methyl-5-phenyl-2(5H)-furanone

→

5-[(1,1'-biphenyl)-4-yl]-3,4-dihydroxy-5-phenyl-2(5H)-furanone

Ausbeute 38.0%

Reaktionsbedingungen

Vorschrift

Hydrogenolysis of 500 mg of 5-[(1,1'-biphenyl)-4-yl]-4-hydroxy-3-phenylmethoxy-5-phenyl-2(5H)-furanone was performed in a similar manner as described in the preparation of 3,4-dihydroxy-5-methyl-5-phenyl-2(5H)-furanone to provide 150 mg (38% yield) of 5-[(1,1'-biphenyl)-4-yl]-3,4-dihydroxy-5-phenyl-2(5H)-furanone as colorless needles: mp 188-191° C. dec.(CHCl3 /hexanes). 1H NMR (acetone-d6) δ 7.75-7.36 (m, 14H). 13C NMR (acetone-d6) δ 168.34, 154.84, 141.50, 140.66, 140.30, 139.42, 129.18, 128.74, 128.59, 127.92, 127.40, 127.25, 127.07, 119.45, 84.59. Anal Calcd for C22H16O4 : C, 76.73; H, 4.68. Found: C, 76.44; H, 4.50.

Quelle