Hirano, Masao; Ukawa, Ken; Yakabe, Shigetaka; Morimoto, Takashi
Synthetic Communications, 1997 , vol. 27, # 9 p. 1527 - 1533

Reddy, Anugula Mahipal; Tsutsui, Shinobu; Sakamoto, Kenkichi
Chemistry Letters, 2001 , # 5 p. 476 - 477