So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Ollivier, Jean; Dorizon, Philippe; Piras, Pier P.; de Meijere, Armin; Salauen, Jacques researched the compound: Tri(naphthalen-1-yl)phosphine( cas:3411-48-1 ).Recommanded Product: Tri(naphthalen-1-yl)phosphine.They published the article 《Strain, silyl and steric effects on the regioselectivity of palladium(0) catalyzed allyl esters reduction as alternative to the Wittig reaction》 about this compound( cas:3411-48-1 ) in Inorganica Chimica Acta. Keywords: Wittig reaction alternative; olefination reaction; strain effect regioselectivity allyl ester reduction; palladium catalyzed allyl ester reduction; silyl effect regioselectivity allyl ester reduction; steric effect regioselectivity allyl ester reduction. We’ll tell you more about this compound (cas:3411-48-1).
1-(1-Alkenyl)- (I; n =4, R = H, SiMe3, SiEt3, Bu, X = OAc, OCO2Me; n = 1, R = H, SiMe3, Bu, X = OTs) and 1-(1-cycloalkenyl)cycloalkyl esters (acetate, tosylate, mesylate) (II; n = 1, 3, 4; m = 1, 2) underwent palladium(0) catalyzed hydrogenolysis by sodium formate or n-butylzinc chloride as hydride sources. The regioselectivity of the reduction can be monitored either by ring strain, silyl substitution of the allyl moieties or by using the steric effect of trivalent phosphorus ligands related to their cone angles ϑ. Alkylidenecycloalkanes (III) and cycloalkylidenecycloalkanes (IV) have been obtained, generally in good yields, thus providing a convenient alternative to the Wittig olefination and a new access to allylsilanes.
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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