The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Tri(naphthalen-1-yl)phosphine( cas:3411-48-1 ) is researched.Category: chiral-nitrogen-ligands.Schiemenz, Gunter Paulus; Naether, Christian; Poerksen, Simon published the article 《peri-Interactions in naphthalenes, 9. On hypercoordination in non-quaternary phosphonium salts and a secondary phosphine with the (8-dimethylamino-naphth-1-yl) substituent》 about this compound( cas:3411-48-1 ) in Zeitschrift fuer Naturforschung, B: Chemical Sciences. Keywords: phosphine protonation tertiary phosphonium proton phosphorus coupling constant; aminonaphthyl phosphine preparation protonation nitrogen phosphorus peri interaction; crystal structure secondary dimethylamino naphthyl phosphine; mol structure secondary dimethylamino naphthyl phosphine. Let’s learn more about this compound (cas:3411-48-1).
The 31P NMR data of non-quaternary (8-dimethylamino-naphth-1-yl)phosphonium salts, with emphasis on the 1J(31P, 1H) coupling constants, where scrutinized for their potential to yield information about N-P dative interactions. As for δ(29Si) and 1J(29Si, 1H) in the isosteric silanes, the data do not permit conclusions in favor of such interactions. 1J(31P, 1 H) of bis(8-dimethylaminonaphthalen-l-yl)phosphine in conjunction with the distances d(N···P) invalidates the basic assumption on which the claim of dative N→P/Si bonding in such phosphorus and silicon compounds rests, viz. that N···P/Si distances of ca. 270 pm are evidence for P/Si-hypercoordination. No evidence for hydrogen bonds N···H-P was found.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis