منابع مشابه
First reductive dimerization of a polycyclic azine.
The tptz molecule is reduced by potassium into its anion-radical in the compound K(tptz)(2) (), whereas it is reductively coupled by SmI(2) and UI(3)(py)(4) into the bis-triazinide ligand in the dinuclear complexes [Sm(2)(tptz-tptz)(DMF)(8)][I](4).3.5DMF (.3.5DMF) and U(2)I(6)(tptz-tptz)(MeCN)(2).2MeCN (.2MeCN) where each metal ion occupies a pentadentate N(5) cavity of the [tptz-tptz](2-) ligand.
متن کاملPd(OAc)2/Ph3P-catalyzed dimerization of isoprene and synthesis of monoterpenic heterocycles
The palladium-catalyzed dimerization of isoprene is a practical approach of synthesizing monoterpenes. Though several highly selective methods have been reported, most of them still required pressure or costly ligands for attaining the active system and desired selectivity. Herein, we present a simple and economical procedure towards the tail-to-tail dimer using readily available Pd(OAc)2 and i...
متن کاملReductive dimerization of tethered pyrenes: implications for the reduction of polcyclic aromatic hydrocarbons.
The reduction of polycyclic aromatic hydrocarbons (PAHs) with alkali metals can, in some cases, afford a reductive dimerization process. This process takes place in systems that have the capability of forming a stable anionic subunit and concentrating a high electron density on a specific carbon atom, which will eventually form a new s bond.[1] Such behavior has been recently reported in the re...
متن کاملNickel-catalyzed, sodium iodide-promoted reductive dimerization of alkyl halides, alkyl pseudohalides, and allylic acetates.
The first general method for the reductive dimerization of alkyl halides, alkyl mesylates, alkyl trifluoroacetates, and allylic acetates is reported which proceeds with low catalyst loading (0.5 to 5 mol%), generally high yields (80% ave yield), and good functional-group tolerance.
متن کاملP-P bond formation via reductive dimerization of [Cp*Fe(η5-P5)] by divalent samarocenes.
The two new 3d/4f polyphosphide complexes [(Cp*Fe)(2)P(10){Sm(η(5)-C(5)Me(4)R)(2)}(2)] (Cp* = η(5)-C(5)Me(5); R = Me, nPr) were prepared by reductive dimerization of [Cp*Fe(η(5)-P(5))] with samarocenes. They are the first P(10) bridging 3d/4f metal complexes and the first examples of reductive coupling of polyphosphide complexes by divalent lanthanides.
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1967
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.40.1257