Herrera AC, Briceno A, Gonzalez T, Linden A, Heinemann FW, Agrifoglio G, Pastran J, Dorta R (2016)
Publication Status: Published
Publication Type: Journal article
Publication year: 2016
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Book Volume: 27
Pages Range: 759-767
Journal Issue: 16
DOI: 10.1016/j.tetasy.2016.06.013
Enantiomerically pure C-1 and C-2-symmetric bidentate N,N- and N,P-ligands are accessible from (+)-camphor in good yields (60-90%). Modified syntheses of precursors 1 and 2 are disclosed as well as the crystal structures of three hydroxy-pyrazoline intermediates. Ligands 3, 4, 6, and 11 were fully characterized including an X-ray crystal structure of C-2-symmetric 6, which showed an E-configuration in the solid state. These ligands form complexes with Ni(II), Pd(II), and Rh(I) in good yields (84-96%); the X-ray crystal structures of complexes 12, 14, and 16 confirmed the bidentate coordination modes of ligands 4, 6, and 11 and distorted tetrahedral [for NON and square planar [for Rh(I)] coordination geometries. Furthermore, the structure of the Rh(I) complex 16 revealed the presence of a Ph2PCl ligand, which, along with spectroscopic data, is proof of an almost quantitative P-N bond cleavage upon coordination of ligand 11 to [RhCl(COD)](2). (C) 2016 Elsevier Ltd. All rights reserved.
APA:
Herrera, A.C., Briceno, A., Gonzalez, T., Linden, A., Heinemann, F.W., Agrifoglio, G.,... Dorta, R. (2016). Camphopyrazole-based N,N- and N,P-ligands and chiral complexes of Ni, Pd, and Rh: P-N bond activation upon Rh(I) complexation. Tetrahedron-Asymmetry, 27(16), 759-767. https://doi.org/10.1016/j.tetasy.2016.06.013
MLA:
Herrera, Alberto Cesar, et al. "Camphopyrazole-based N,N- and N,P-ligands and chiral complexes of Ni, Pd, and Rh: P-N bond activation upon Rh(I) complexation." Tetrahedron-Asymmetry 27.16 (2016): 759-767.
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