Corey−Chaykovsky Epoxidation of Twisted Amides: Synthesis and Reactivity of Bridged Spiro-epoxyamines
摘要:
The first example of a Corey-Chaykovsky epoxidation employing amides as substrates is described. Medium-bridged twisted amides serve as precursors to a family of isolable aminoepoxides. The reactivity of bridged spiro-epoxyamines is also investigated.
Cation−n Control of Regiochemistry of Intramolecular Schmidt Reactions en Route to Bridged Bicyclic Lactams
作者:Michal Szostak、Lei Yao、Jeffrey Aubé
DOI:10.1021/ol901771b
日期:2009.10.1
The regiochemistry of the intramolecular Schmidt reaction of 2-azidoalkylketones is controlled by placing a thioether substituent at the position adjacent to the ketone to provide access to a family of unsubstituted medium bridged twisted amides. This outcome is ascribed to the presence of stabilizing through-space interactions between the diazonium cation and the n electrons on heteroatom and does
Corey−Chaykovsky Epoxidation of Twisted Amides: Synthesis and Reactivity of Bridged Spiro-epoxyamines
作者:Michal Szostak、Jeffrey Aubé
DOI:10.1021/ja906471q
日期:2009.9.23
The first example of a Corey-Chaykovsky epoxidation employing amides as substrates is described. Medium-bridged twisted amides serve as precursors to a family of isolable aminoepoxides. The reactivity of bridged spiro-epoxyamines is also investigated.