[1]JournaloftheAmericanChemicalSociety,1980,vol.102,p.2125-2127
[1]JournaloftheAmericanChemicalSociety,1980,vol.102,p.2125-2127
[1]JournalofOrganicChemistry,1993,vol.58,p.3877-3885
[1]Heterocycles,1989,vol.28,p.1037-1050
[1]Qian,Hua;Han,Xiaoqing;Widenhoefer,RossA.[JournaloftheAmericanChemicalSociety,2004,vol.126,#31,p.9536-9537]