Type 2 Intramolecular <i>N</i>-Acylazo Diels−Alder Reaction: Regio- and Stereoselective Synthesis of Bridgehead Bicyclic 1,2-Diazines
作者:Claudia L. Molina、Chun P. Chow、Kenneth J. Shea
DOI:10.1021/jo070978f
日期:2007.8.31
The type 2 intramolecular N-acylazo Diels−Alder reaction provides a regio- and stereoselective synthesis of bicyclic 1,2-diazine systems. A new method for the generation of N-acylazo dienophiles with tetra-n-butylammonium periodate is reported. X-ray crystallographic analysis allowed the quantification of structural distortions of the nonplanar bridgehead olefin and lactam functionalities in 1,2-diazine