Diastereo- and Enantioselective [4+2] Cycloadditions of Cyclic Enones with Cyclic 1-Azadienes
Zhou Rong, Xiao Wei, Yin Xiang, Zhan Gu, Chen Yingchun
Acta Chimica Sinica . 2014, (7): 862 -866 .  DOI: 10.6023/A14040294