El-Ahmad, Youssef; Maillet, Philippe; Laurent, Elisabeth; Talab, Akram; Tran, Gilles; Ollivier, Roland
Heterocycles, 1997 , vol. 45, # 4 p. 723 - 734

Easton, Christopher J.; Love, Stephen G.; Wang, Peng
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1990 , # 2 p. 277 - 282

Takahata, Hiroki; Ohnishi, Yoshinori; Yamazaki, Takao
Heterocycles, 1980 , vol. 14, # 4 p. 467 - 469

Fang, Yuesi; Rogness, Donald C.; Larock, Richard C.; Shi, Feng
Journal of Organic Chemistry, 2012 , vol. 77, # 14 p. 6262 - 6270