First Propargyl Azides Bearing Strong Acceptor Substituents and Their Effective Conversion into Allenyl Azides: Influence of the Electronic Effects of Substituents on the Reactivity of Propargyl Azides
作者:Joseph Rodolph Fotsing、Klaus Banert
DOI:10.1002/ejoc.200500135
日期:2005.9
We have succeeded in the synthesis of propargyl azides containing 1- or 3-phenylthio functionalities. The selective oxidation of their sulfur atoms to sulfoxides and sulfones allows access to the first propargyl azides bearing acceptor substituents. Interestingly, the prototropicrearrangement of the latter propargyl azides leads to the formation of allenyl azides with relatively high stabilities and