Reaktion #456321

Reaktionsgleichung

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

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

→

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

Ausbeute 63.3%

Reaktionsbedingungen

Vorschrift

Hydrogenolysis of 500 mg of the 5-[(1,1'-biphenyl)-4-yl]-3-phenylmethoxy-4-hydroxy-5-methyl-2(5H)-furanone was performed in a similar manner as described in the synthesis of 3,4-dihydroxy-5-methyl-5-phenyl-2(5H)-furanone to provided 240 mg (63% yield) of 5-[(1,1'-biphenyl)-4-yl]-3,4-dihydroxy-5-methyl-2(5H)-furanone as a white powder: mp 206-212° C. dec. (MeOH/H2O), 1H NMR (acetone-d6) δ 7.69-7.33 (m, 9H), 1.88 (s, 3H). 13C NMR (acetone-d6) δ 169.5, 157.1, 141.6, 141.0, 139.8, 129.6, 128.3, 127.6, 127.6, 126.6, 117.9, 81.2, 24.5. Anal Calcd for C17H14O4 : C, 72.33; H, 5.00. Found: C, 72.07; H, 5.14.

Quelle