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Norbornadiene
About: Norbornadiene is a research topic. Over the lifetime, 2389 publications have been published within this topic receiving 38603 citations.
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TL;DR: The ruthenium (II) diene complexes [RuCl2(nbd)(dppb) as mentioned in this paper ] have been characterized and characterized spectroscopically.
Abstract: The ruthenium (II) diene complexes [Ru(X)(Cl)(nbd)(dppb)] (X = Cl, H; nbd = 2,5-norbornadiene; dppb = PPh2(CH2)4PPh2) have been prepared and characterized spectroscopically. The X-ray crystal structure of RuCl2(nbd)(dppb) (crystal data at 22°C: space group P1, a = 10.896 (1) A, b = 15.168(2) A, c = 10.829 (1) A, α = 103.02(1)°, β = 107.08(1)°, γ = 81.65(1)°, Z = 2, R = 0.054 for 6420 reflections) shows an octahedral geometry at Ru, with the chloro ligands slightly distorted from a trans configuration (Cl)(1)-Ru-C1(2) = 168.4°); the unit cell contains two molecules of the complex and one molecule of benzene. Reaction of this complex with H2, in presence of Proton Sponge (PS, 1,8-bis(dimethylamino)naphthalene) as base, is complicated by initial dissociation of nbd, and [Ru2Cl5(dppb)2]−-PSH+ is the major product. A minor product, the hydrido(diene) complex trans-RuCl(nbd)(dppb) 5, characterized spectroscopically, is more effectively synthesized from (a) trans-Ru(H)Cl(nbd)(PPh3)2, 1, and dppb, or (b) reaction of RuCl2(dppb)-(PPh3) with H2 in presence of nbd and PS. Complex 5 is unreactive toward H2 or CO while 1 has been shown previously to give η2-H2 and norbornenoyl derivatives, respectively; the differences in reactivity are discussed.
5 citations
TL;DR: The reaction of norbornene (II) and norbornadiene (X) with indoles, thiophenes, furans and pyrroles proceeds with moderate to high enantioselectivities as discussed by the authors.
Abstract: The reaction of norbornene (II) and norbornadiene (X) with indoles, thiophenes, furans and pyrroles proceeds with moderate to high enantioselectivities.
5 citations
TL;DR: In this article, the meso-cyanooctaethylporphyrin Noxide complex was synthesized for the first time, and the new complex entered into 1,3-cycloaddition to olefins.
Abstract: Starting from the nickel meso-formyloctaethylporphyrin oxime complex, the meso-cyanooctaethylporphyrin N-oxide complex was synthesized for the first time. The new complex enters into 1,3-cycloaddition to olefins. The double addition of the nitrile oxide to 2,5-norbornadiene affords a porphyrin dimer, whose structure was established by X-ray diffraction analysis.
5 citations
TL;DR: In this article, four exo- double pyrazolines 3-5 have been prepared from norbornadiene and dimethyl phenyldiazomethylphosphonate; their structures have been proven by nmr spectroscopy.
Abstract: Four new exo- double pyrazolines 3–5 have been prepared from norbornadiene and dimethyl phenyldiazomethylphosphonate; their structures have been proven by nmr spectroscopy. There is a strong predom...
5 citations
TL;DR: In this paper, the cyclopentadiene cycloadduct was used to give the amide, which was obtained by chromatographic separation from the 2,3-dihydropyran reaction.
5 citations