1. 1)Otsuka, M.; Endo, K.; Shibata, T. Chem. Commun. 2010, 46, 336.
2. 2)For reviews on the haptotropic migration, see:
3. (a) K. H. Dötz, Angew. Chem., Int. Ed. Engl. 23, 587 (1984)
4. (c) M. F. Semmelhack, In Comprehensive Organometallic Chemistry II; E. W. Abel, F. G. A. Stone, G. Wilkinson, Eds.; Pergamon Press: Oxford, UK, 1995; Vol. 12, Chapter 9, p 979.
5. (d) W. D. Wulff, In Comprehensive Organometallic Chemistry II; E. W. Abel, F. G. A. Stone, G. Wilkinson, Eds. Pergamon Press: Oxford, UK, 1995; Vol. 12, pp 469.