Li, Quan; Jin, Changshu; Petukhov, Pavel A.; Rukavishnikov, Aleksey V.; Zaikova, Tatiana O.; Phadke, Avinash; LaMunyon, Donald H.; Lee, Melissa D.; Keana, John F. W. Journal of Organic Chemistry, 2004, vol. 69, # 4 p. 1010 - 1019 doi: 10.1021/jo035640+