Okano, Kohji; Morimoto, Toshiaki; Sekiya, Minoru
Journal of the Chemical Society, Chemical Communications, 1984 , # 13 p. 883 - 884

Tsuji, Jiro; Takahashi, Kazuhiro; Minami, Ichiro; Shimizu, Isao
Tetrahedron Letters, 1984 , vol. 25, # 42 p. 4783 - 4786