Kou, Yuan; Yin, Yuanqi published an article about the compound: Tri(naphthalen-1-yl)phosphine( cas:3411-48-1,SMILESS:C1=CC2=C(C=C1)C(=CC=C2)P(C1=CC=CC2=C1C=CC=C2)C1=CC=CC2=C1C=CC=C2 ).Synthetic Route of C30H21P. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:3411-48-1) through the article.
Hydroformylation of camphene in the presence of [(COD)-RhCl]2 and various phosphine ligands under 10 MPa syngas (CO/H2 = 1), 100 °C has been investigated. The active catalyst has been demonstrated by the IR spectra to be the HRh(CO)Ln (for bidentates, n = 1, for monodentates, n = 2). The selectivity to exo- or endo-products (aldehyde and/or alc.) is found to be decided by the cone angle of the ligand carried by the rhodium carbonyl. The larger ligands such as P(o-tolyl)3 tend to make the rhodium complex approach the double bond from endo side and then to give more exo-alc. because of the attack of the hydrogen occurs from the cis position with the complex. The bidentate phosphine ligands which have relatively smaller cone angles, are expected to give more endo-product. However, the enhanced stability of Rh-Rh bond that arises from the formation of the phosphine-bridged bimetallic rhodium carbonyls limits the formation of the chelated active species, so that only the endo-aldehydes with relatively lower conversion are observed The possible mechanism of exo- and endo-product formations has also been discussed.
In addition to the literature in the link below, there is a lot of literature about this compound(Tri(naphthalen-1-yl)phosphine)Synthetic Route of C30H21P, illustrating the importance and wide applicability of this compound(3411-48-1).
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