T. Harayama et Y. Nishita, EFFICIENT AND CONVENIENT SYNTHESIS OF ANGULAR FURANOCOUMARINS FROM HYDROXYCOUMARINS, Chemical and Pharmaceutical Bulletin, 44(10), 1996, pp. 1986-1988
Angular furanocoumarins (1) were synthesized via sequential reactions
of vinylation of halo-hydroxycoumarins (5 or 6) with chlorodimethylvin
ylsilane (8) and Pd catalyst, oxidation of Tl(NO3)(3) in methanol, and
treatment with acid.