反应详情

Mitsunoble coupling of 0.20 g (1.2 mmol) of 4-hydroxy-1,1'-biphenyl with 0.34 g (1.0 mmol) of 3,4-dibenzyloxy-5-(2-hydroxyethyl)-2(5H)-furanone and subsequent benzyl group deprotection by hydrogenation were performed in a similar manner as described in the synthesis of 3,4-dihydroxy-5-[2-(4-phenoxy)phenoxyethyl]-2(5H)-furanone to provide 100 mg (32% yield) of 5-[2-((1,1'-biphenyl)-4-oxy)ethyl]-3,4-dihydroxy-2(5H)-furanone as a white powder after trituration with ether and hexanes: 1H NMR (acetone-d6) δ 7.71-7.02 (m, 9H), 4.97 (dd, J=4.9, 8.7 Hz, 1H), 4.25 (dd, J=2.6, 4.7 Hz, 2H), 2.58-2.41 (m, 1H), 2.10-1.92 (m, 1H). Anal Calcd for C18H16O5 +1H2O: C, 67.49; H, 5.66. Found: C, 67.34; H, 5.42.