A palladium-catalyzed three-component reaction of N-tosylhydrazone, norbornene and aryl halide has been demonstrated. In this reaction, an intermolecular Heck-type reaction occurs, which is followed by the alkyl palladium carbene migratory insertion process. This transformation provides an efficient and convenient methodology for the double functionalization of norbornene with good to excellent...

The Carboni-Lindsey reaction between tetrazines and strained unsaturated hydrocarbons has in recent years become a useful tool bioorthogonal chemistry for labelling biomolecules vitro vivo. Here, we report computational studies on the mechanism of Diels-Alder/Retro-Diels-Alder commercially available tetrazine norbornene. Isomerism with norbornene-amide relevant applications bioconjugation chemi...

A series of novel Ni(II) and Pd(II) complexes bearing chiral bis(β-ketoamino) ligand were synthesized characterized. The exhibited high activities for norbornene homopolymerization with only B(C 6 F 5 ) 3 as cocatalyst, complex even up to 1.38 ×10 g polymer /mol Ni ·h. All the had good thermal stability. Most importantly, also displayed 10 metal ·h toward copolymerization 5-norbornene-2-yl acet...

The oxidative addition of cyclic ditelluride 1-oxa-5,6-ditelluraspirooctane, Te(2)C(5)H(8)O, to bis(triphenylphosphine)(norbornene)platinum(0), [Pt(PPh(3))(2)(eta(2)-nb)], and to [1,8-bis(diphenylphosphino)naphthalene](norbornene)platinum(0), [Pt(dppn)(eta(2)-nb)], lead to the formation of dinuclear and mononuclear tellurolato platinum(ii) complexes, respectively, as a consequence of Te-Te bond...

Objectives . Catalytic processes involving norbornene (NBN) and norbornadiene (NBD) offer exceptional opportunities for the synthesis of a wide range hard-to-reach polycyclic hydrocarbons. The problems selectivity manufacturability these reactions are fundamentally important their practical implementation. aim this review is to summarize latest advances in field designing heterogeneous catalyst...

The scope of the Pauson-Khand reaction (PKR) of internal trifluoromethyl alkynes, previously described with norbornadiene, is expanded to norbornene and ethylene. A thorough structural analysis of the resulting PK adducts has been carried out to unveil that α-trifluoromethylcyclopentenones are preferred in all cases, independently of the electronic properties of the alkyne. The regioselectivity...

A new strategy is presented for the synthesis of graft copolymers using only the ring-opening metathesis polymerization (ROMP). From a ROMP-derived main chain, pendant maleimide functional groups are converted into norbornene moieties via a Diels-Alder reaction with cyclopentadiene. The norbornene groups serve as sites of initiation, and subsequent ROMP from the main chain yields graft copolyme...

The C-C coupling of N,N'-bis(5-norbornene-2,3-dicarboximide) (3) and N,N'-bis(7-oxa-5-norbornene-2,3-dicarboximide) (6) with aryl and heteroaryl iodides gave under reductive Heck conditions the C-aryl(hetaryl), substituted N,N'-bistricyclic imides 7a-f and 8a,b. The fused spiro-1,3-indandionolylpyrrolidine compounds, 9, 10 and 11 were also obtained from ninhydrine, sarcosine and 3 or 6 via [3+2...

The dinuclear complex Cp*2Os2Br4 (Cp* ) pentamethylcyclopentadienyl) and related mono(pentamethylcyclopentadienyl)osmium compounds are catalysts for the ring-opening metathesis polymerization (ROMP) of norbornene. The most active catalyst prepared to date is made by treatment of Cp*2Os2Br4 with methylaluminoxane. This catalyst polymerizes norbornene with yields up to 167 kg of polymer per mol o...