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Efficient and Convenient Synthesis of Angular Furanocoumarines from Hydroxycoumarines.

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1996

Year

Abstract

Angular furanocoumarins (1) were synthesized via sequential reactions of vinylation of halo-hydroxycoumarins (5 or 6) with chlorodimethylvinylsilane (8)and Pd catalyst, oxidation of Tl(NO3)3 in methanol, and treatment with acid.