https://www.selleckchem.com/sc....reening/natural-prod
A diastereoselective and high-yielding gold-catalyzed synthesis of trans-2-silyl-4,5-dihydrofurans is described. In addition to a sequential manner, this reaction could be performed in a one-pot procedure from propargylsilanes and aldehydes. A mechanistic proposal for the cis-trans isomerization step is formulated. To provide experimental support for this proposal, which involves ring opening/ring closing steps of the dihydrofuran, several isotopically labeled experiments, intramolecular capture of a proposed intermedia
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