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Biphosphole: A C 2 Symmetry Chiral Bidentate Ligand. Synthesis and Characterization Of Nickel, Palladium, Platinum, and Rhodium Complexes

✍ Scribed by Gouygou, Maryse; Tissot, Olivier; Daran, Jean-Claude; Balavoine, Gilbert G. A.


Book ID
125982247
Publisher
American Chemical Society
Year
1997
Tongue
English
Weight
302 KB
Volume
16
Category
Article
ISSN
0276-7333

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New chiral bidentate nitrogen donor liga
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The reaction of 1,2-diamines la-c with Ph3PBr2 in the presence of triethylamine gives rise to the corresponding diphosphonium salts 2a-c in good yields. Treatment of these salts with NaH at room temperature in CH,Cl, affords the diiminophosphoranes 3a-c in near quantitative yields. Derivatives 3a,b