Sophie R. Beeren, S. Dabb, B. Messerle
Jan 15, 2009
Citations
0
Influential Citations
20
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract A series of silver complexes generated in situ from AgOSO 2 CF 3 (AgOTf) and a range of bidentate ligands were investigated as catalysts for the intramolecular hydroamination of 4-pentyn-1-amine. A variety of P- and N-donor ligands were tested including the novel pyrazole-phosphine ligand 1-(2-(diphenylphosphino)phenyl)pyrazole. The best catalyst was formed from equimolar amounts of the P,N-donor ligand 1-(2-(diphenylphosphino)ethyl)pyrazole and AgOTf, which achieved a turnover rate of 129 h −1 for the cyclisation of 4-pentyn-1-amine.