Literatures: Schmeisser, M.; Sartori, P.; Lippsmeier, B. Chemische Berichte, 1970 , vol. 103, p. 868 - 879 Yield: ~69% |
Literatures: Morita, Tsuyoshi; Okamoto, Yoshiki; Sakurai, Hiroshi Synthesis, 1981 , # 9 p. 745 - 746 Yield: ~87% |