Flexible metathesis-based approaches to highly functionalised furans and pyrroles
作者:Timothy J. Donohoe、Neil M. Kershaw、Allan J. Orr、Katherine M.P. Wheelhouse (nee Gosby)、Lisa P. Fishlock、Adam R. Lacy、Matilda Bingham、Panayiotis A. Procopiou
DOI:10.1016/j.tet.2007.09.087
日期:2008.1.28
have been synthesised in short order by the judicious use of a ring-closingmetathesis/aromatisation strategy. Two contrasting approaches are described exploiting a palladium-catalysed union of allylic alcohols and sulfonamides in one case, and a titanium mediated methylenation of homoallylic esters in another. A number of groups that are difficult to install via traditional methods were incorporated