Synthetic studies of spiroketal enol ethers: an unexpected oxidation by Martin's sulfurane
Abstract
In an attempt to synthesize a spiroketal enol ether natural product, we found that treatment of alcohol 5 with Martin's sulfurane did not give the anticipated olefin, but instead afforded ketone 15 through an unprecedented oxidation. © 2007 Elsevier Ltd. All rights reserved.
This paper has been withdrawn.