Catalytic Hydroamination of Alkynes and Norbornene with Neutral and Cationic Tantalum Imido Complexes

Autor: Anderson, L. L., Arnold, J., Bergman, R. G.
Zdroj: Organic Letters; July 2004, Vol. 6 Issue: 15 p2519-2522, 4p
Abstrakt: Several tantalum imido complexes have been synthesized and shown to efficiently catalyze the hydroamination of internal and terminal alkynes. An unusual hydroamination/hydroarylation reaction of norbornene catalyzed by a highly electrophilic cationic tantalum imido complex is also reported. Factors affecting catalyst activity and selectivity are discussed along with mechanistic insights gained from stoichiometric reactions.
Databáze: Supplemental Index