16247-23-7Relevant academic research and scientific papers
Versatile syntheses of optically pure pce pincer ligands: Facile modifications of the pendant arms and ligand backbones
Yang, Xiang-Yuan,Tay, Wee Shan,Li, Yongxin,Pullarkat, Sumod A.,Leung, Pak-Hing
supporting information, p. 1582 - 1588 (2015/05/13)
A series of chiral C-stereogenic PCP and PCN ligand precursors were prepared in situ from inexpensive achiral starting materials via a simple catalytic asymmetric P-H addition reaction in good overall yields. This facile catalytic method of preparing the ligand backbones renders easy and economical modifications of the electronically crucial para-substituent, chiral functionalities, and donor atoms for different transition metal ions. A one-pot synthetic procedure was used efficiently to prepare the corresponding optically pure pincer complexes. All the new complexes were characterized by NMR and mass spectroscopy. The molecular structures of several selected complexes have also been elucidated by X-ray crystallography. Preliminary studies indicated that minor structural changes on these novel pincer complexes affect their chemical properties significantly when they were applied as catalysts for the reaction between diphenylphosphine and chalcone.
Unsymmetrical chiral PCN pincer palladium(II) and nickel(II) complexes with aryl-based aminophosphine-imidazoline ligands: Synthesis via aryl C-H activation and asymmetric addition of diarylphosphines to enones
Yang, Ming-Jun,Liu, Yan-Jing,Gong, Jun-Fang,Song, Mao-Ping
experimental part, p. 3793 - 3803 (2011/09/20)
Figure Persented: Chiral 3-(2′-imidazolinyl)anilines 3a-c were easily synthesized by converting the carboxyl and nitro groups in commercially available 3-nitrobenzoic acid to chiral imidazoline and amine, respectively. The one-pot phosphorylation/metalati
Conjugate phosphination of cyclic and acyclic acceptors using Rh(I)-phosphine or Rh(I)-carbene complexes. Probing the mechanism with chirality at the silicon atom or the phosphorus atom of the Si-P reagent
Trepohl, Verena T.,Fr?hlich, Roland,Oestreich, Martin
experimental part, p. 6510 - 6518 (2011/02/26)
The Rh(I)-catalyzed conjugate phosphinyl transfer from an Si-P reagent to an electron-deficient acceptor requires individual protocols for cyclic and acyclic α,β-unsaturated carbonyls and carboxyls. While 1,4-addition to cyclic acceptors is catalyzed by a
