854602-11-2Relevant academic research and scientific papers
Rh2(S-1,2-NTTL)4: A novel Rh2(S-PTTL)4 analog with lower ligand symmetry for asymmetric synthesis of chiral cyclopropylphosphonates
Adly, Frady G.,Maddalena, Johncarlo,Ghanem, Ashraf
, p. 764 - 774 (2014)
A new series of dirhodium(II) tetracarboxylate was derived from N-1,2-naphthaloyl-(S)-amino acid ligands. In terms of enantioselectivity, Rh2(S-1,2-NTTL)4 (3a) derived from N-1,2-naphthaloyl-(S)-tert-leucine, was the best-performing
First X-ray structure of a N-naphthaloyl-tethered chiral dirhodium(II) complex: Structural basis for tether substitution improving asymmetric control in olefin cyclopropanation
Ghanem, Ashraf,Gardiner, Michael G.,Williamson, Rachel M.,Mueller, Paul
supporting information; experimental part, p. 3291 - 3295 (2010/06/19)
Good-ee! The first one-pot olefin cyclopropanation that gives high ee is reported. The optimized catalyst is the 4-Br-substituted chiral paddle-wheel tetracarboxylatodirhodium(II) complex based on N-naphthaloyl-(S)-tert-leucinate. X-ray structural analysis of the parent catalyst reveals a square chiral crown cavity shrouding the axial coordination site (see figure) Figure Presentation
