Roy, Patrick J.; Dufresne, Claude; Lachance, Nicolas; Leclerc, Jean-Philippe; Boisvert, Michel; Wang, Zhaoyin; Leblanc, Yves
Synthesis, 2005 , # 16 art. no. M03305SS, p. 2751 - 2757

Bayer Aktiengesellschaft
Patent: US5418243 A1, 1995 ;