The synthesis of densely functionalized trisubstituted and tetrasubstituted furans via a novel Ru(II)-catalyzed intramolecular cyclization of vinyl diazoesters is reported. The synthetic utility of these furans is further demonstrated through a simple acid-mediated reaction to access highly substituted Δα,β-butenolides.
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| http://dx.doi.org/10.1021/acs.orglett.8b02554 | DOI Listing |
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