参考文献:
Journal of the American Chemical Society, , vol. 46, p. 884 Journal of the American Chemical Society, , vol. 5, p. 86 Org.Synth.Coll.Vol.I<93>,5 deutsche Ausgabe,S.49 Chemische Berichte, , vol. 3, p. 77 Chemische Berichte, , vol. 4, p. 5,Anm. Journal of the American Chemical Society, , vol. 63, p. 733,736