Asymmetric Induction in the Metal-Promoted [6.pi. + 2.pi.] Cycloaddition of Azepines. Application to the Construction of Tropane Alkaloids and the Total Synthesis of (+)-Ferruginine
作者:James H. Rigby、Kevin M. Short、Humy S. Ateeq、James A. Henshilwood
DOI:10.1021/jo00046a007
日期:1992.9
Transition-metal-promoted [6pi + 4pi] and [6pi + 2pi] higher-order cycloaddition reactions can be effected thermally or by employing a chromium metal catalyst. The resultant products are identical in all respects to those generated photochemically.