Kuethe, Jeffrey T.; Wong, Audrey; Wu, Jimmy; Davies, Ian W.; Dormer, Peter G.; Welch, Christopher J.; Hillier, Michael C.; Hughes, David L.; Reider, Paul J.
Journal of Organic Chemistry, 2002 , vol. 67, # 17 p. 5993 - 6000

Reddy Chidipudi, Suresh; Khan, Imtiaz; Lam, Hon Wai
Angewandte Chemie - International Edition, 2012 , vol. 51, # 48 p. 12115 - 12119
Angew. Chem.