A Dearomatizing, Thionium Ion Cyclization for the Synthesis of Functionalized, Azaspirocyclic Cyclohexadienones
作者:Caroline Ovens、Nathaniel G. Martin、David J. Procter
DOI:10.1021/ol8002095
日期:2008.4.1
Thionium ions, generated by the addition of thiols to N-benzylglyoxamides, undergo a dearomatizing spirocyclization. The alkyl or arylsultanyl group introduced during the thionium ion cyclization can act as a synthetic handle and a stereochemical control element during modifications of the azaspirocyclic frameworks (R(F) = CH(2)CH(2)C(8)F(17)).
Intramolecular aryl transfer to thionium ions in an approach to α-arylacetamides
作者:Caroline Ovens、Johannes C. Vogel、Nathaniel G. Martin、David J. Procter
DOI:10.1039/b904577e
日期:——
An intramolecular aryl transfer to thionium ions has been exploited in a fluorous synthesis of α-arylacetamides.