The reaction of salicylaldehydes with benzyne prepared from o-trimethylsilyphenyl triflate and CsF gave xanthenes and xanthones. When the reaction was carried out under basic conditions, 9-hydroxyxanthenes (xanthols) were obtained in good yields.
BRISTOL, J. A.;GOLD, E. H.;GROSS, I.;LOVEY, R. G.;LONG, J. F., J. MED. CHEM., 1981, 24, N 8, 1010-1013
作者:BRISTOL, J. A.、GOLD, E. H.、GROSS, I.、LOVEY, R. G.、LONG, J. F.