We describe the development of efficient benzannulations of siloxy alkynes with pyridinium and isoquinolinium salts. Such reactions are successfully promoted by a stoichiometric amount of silver(I) benzolate under mild reaction conditions. This process proceeds via a formal inverse-electron demand Diels-Alder reaction, followed by fragmentation of the initially produced bicyclic adducts to deliver a range of synthetically useful phenols and naphthols.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3956059 | PMC |
| http://dx.doi.org/10.1002/adsc.201300443 | DOI Listing |
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