1. refs therein;Brenneman;Tetrahedron,2004
2. therein See also ) Handbook of New York a a For some examples see a See also refs For example see refs therein;Grubbs;Am Chem Soc Am Chem Soc Tetrahedron Lett Am Chem Soc Am Chem Soc Am Chem Soc Lett Org Chem,2003
3. a;Rigby;Synlett Tetrahedron Lett Am Chem Soc,1999