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Expeditious Entry to Novel 2-Methylene-2,3-dihydrofuro[3,2-c] chromen-2-ones from 6-Chloro-4-hydroxychromen-2-one and Propargylic Alcohols

By Josefina Díez, Victorio Cadierno, Alba E. Díaz-Álvarez and Noel Nebra


A catalytic system consisting of the ruthenium(II) complex [Ru(η3-2-C3H4Me)(CO)(dppf)][SbF6] (dppf = 1,1’-bis(diphenylphosphino)ferrocene) and trifluoroacetic acid has been used to promote the coupling of secondary propargylic alcohols with 6-chloro-4-hydroxychromen-2-one. The reactions afforded unusual 2-methylene-2,3-dihydrofuro[3,2-c]chromen-2-ones in good yields

Topics: chromen-2-ones, furochromen-2-ones, propargylic alcohols, ruthenium catalysts, propargylation, cycloisomerization, LCC:Organic chemistry, LCC:QD241-441, LCC:Chemistry, LCC:QD1-999, LCC:Science, LCC:Q, DOAJ:Organic Chemistry, DOAJ:Chemistry
Publisher: Molecular Diversity Preservation International
Year: 2011
DOI identifier: 10.3390/molecules16086470
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