Technical Notes:
1. Catalyst for the cyclization of õ acetylenic carboxylic acids to butenolides.
2. atalyst for the aza-MichaeI reaction of carbamates with enones.
3. Catalyst for the rearrangement of allylic imidates to allylic amides .
4. Catalyst for the Nazarov cyclization of a-alkoxy dienones .
5. Catalyst for the diamination of conjugated dienes .
6.Three com ponent Michael addition, cyclization, cross-coupling reaction.
7. C-H activation of indoles.
References: 1. J. Am. Chem. Soc, 1986, 108, 2753. 2.Org.Lett., 2001,3,25 3J.Org. Chem., 1997, 62, 2288. 4.Org. L ett., 2003, 5, 4'927. 5.J. Ám. Chem. Soc., 2005, 127, 7308. 6.Angew. Chem. Int. Ed., 2008, 47, 1903. 7.Org. L ett., 2009, 1 1, 5506. 8.Angew. Chem. int. Ed., 2009, 48, 6511.