Eyal Barnea

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Reaction of the organoactinide complexes (C5Me5)2AnMe2 (An = Th, U) with catecholborane yields an inclusion complex where the actinide is encapsulated inside a 15-membered, hexaoxo, trianionic macrocycle built from alternating catechol and catecholborate fragments. In the presence of LiOH, a dimer of two encapsulated actinide macrocycles is formed. The(More)
Neutral and cationic organoactinide complexes have been extensively studied in the past decade as catalysts for several organic transformations.1,2 Polymerization of alkenes,3,4 oligomerization,5,6 intermolecular hydroamination,7-9 and hydrosilylation of terminal alkynes,10 and 1,1-insertion of isonitriles into terminal alkynes11 comprise some of these(More)
The coupling reaction of terminal alkynes and tert-butylisonitrile to yield substituted alpha,beta-acetylenic aldimines is catalyzed by the organoactinide neutral complexes Cp*2AnMe2 (Cp* = C5Me5, An = Th, U) and the cationic complex [(Et2N)3U][BPh4]. The reaction proceeds by a 1,1-insertion of the isonitrile into the metal-acetylide bond. Additional(More)
Standard alpha-subunit dissociated from glycoprotein hormones differs from individual (free) alpha-subunit found in sera or in cell culture media; secreted free alpha-subunit is larger, more acidic and lacks the ability of recombining in vitro with standard hCG-beta. It is unclear whether the large free alpha-subunit is only a secretory product or whether(More)
Using a tetradentate, dianionic ligand several new zirconium complexes have been prepared. These pyrrolyl compounds, unlike their titanium analogues, are inactive in hydrohydrazination catalysis. However, they are quite stable, and their reactivity with H2NR, where R = Ph, C6H11, and NHPh, is reported here. Two of the complexes were characterized by X-ray(More)
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