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TABLE OF CONTENTS

Volume 22 Issue 1 , Pages 1 - 68 (January 2008)


Editorials

New Editor-in-Chief: Cornelis J. Elsevier (p 1)
Martin Rothlisberger
Published Online: Jan 21 2008 3:19AM
DOI: 10.1002/aoc.1361

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Research Articles

Heck reactions in monoglyme and diglyme using BmimCl as pre-ligand (p 2-5)
Aline A. Bello da Silva, Andréa Luzia F. de Souza, O. A. C. Antunes
Published Online: Jan 2 2008 4:56AM
DOI: 10.1002/aoc.1337

 

Heck reactions between iodobenzene and methyl acrylate were carried out in monoglyme and diglyme as solvents, using different ligands and palladium sources, and good to high yields were obtained in the production of (E)-substituted olefins. The ionic liquid BmimCl was successfully utilized as pre-ligand to substitute triphenylphosphine.

 

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Preparation, characterization, crystal structure and bioactivity determination of ferrocenyl-thiazoleacylhydrazones (p 6-11)
Jie Zhang
Published Online: Jan 2 2008 4:56AM
DOI: 10.1002/aoc.1338

 

Ferrocenyl-thiazoleacylhydrazones were prepared and they showed good activity against S. aureus, E. coli and P. aeruginosa with MIC values in the range of 25.0-100.0 µg/ml.

 

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Silica-supported perchloric acid as a recyclable catalyst for efficient trimethylsilyl cyanide addition to aldehydes (p 12-14)
Akbar Heydari, Laila MáMani
Published Online: Dec 18 2007 6:29AM
DOI: 10.1002/aoc.1339

 

HClO4SiO2 (0.6 mol%) acts as a highly effective catalyst for cyanation of various aldehydes to the corresponding O-trimethylsilyl cyanohydrins

 

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Efficient homocoupling reactions of halide compounds catalyzed by manganese (II) chloride (p 15-18)
Yu Yuan, Yubo Bian
Published Online: Jan 2 2008 4:56AM
DOI: 10.1002/aoc.1340

 

A new efficient homocoupling reaction was performed in one pot by a combination of metallic magnesium and a catalytic amount of manganese (II) chloride. Various aromatic and alkyl halides underwent the homocoupling smoothly, affording the corresponding symmetrical homocoupling compounds in moderate to good yields.

 

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Synthesis and structural characterization of diorganotin(IV) complexes with 2,6-pyridinedicarboxylic acid (p 19-24)
Amirreza Azadmeher, Mostafa M. Amini, Nasser Hadipour, Hamid Rezahavasi, Hoong-Kun Fun, Chun-Jung Chen
Published Online: Dec 18 2007 6:29AM
DOI: 10.1002/aoc.1343

 

Two new diorganotin(IV) derivatives of 2,6-pyridine-dicarboxylicacid, [Ph2Sn(2,6-C5H3N)(COO)2][Na(2, 6-C5H3N) (COOH)(COO)(CH3OH)2] and [Me2Sn(2, 6-C5H3N)(COO)2(H2O)].H2O were synthesized by t he reaction of Ph3SnCl and PhMe2SnI with 2,6-pyridinedicarboxylic acid, respectively in the presence of sodium methoxide or potassium iso-propoxide.

 

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Synthesis, electrochemical properties and fungicidal activity of 1,1prime-bis(aroyl)ferrocenes and their derivatives (p 25-29)
Yan-Ye Dou, Yun-Fu Xie, Liang-Fu Tang
Published Online: Jan 2 2008 4:56AM
DOI: 10.1002/aoc.1345

 

A series of 1,1-bis(aroyl)ferrocenes and their derivatives were synthesized, and their electrochemical behavior as well as fungicidal activity investigated.

 

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Interaction of methyltin(IV) compounds with carboxylate ligands. Part 2: formation thermodynamic parameters, predictive relationships and sequestering ability (p 30-38)
Concetta De Stefano, Antonio Gianguzza, Ottavia Giuffrè, Alberto Pettignano, Silvio Sammartano
Published Online: Dec 18 2007 6:29AM
DOI: 10.1002/aoc.1346

 

Thermodynamic data of mono-, di- and tri-methyltin(IV)-carboxylate complexes (acetate, malonate, succinate, oxydiacetate, diethylenetrioxydiacetate, malate, citrate, 1,2,3-tricarballylate, 1,2,3,4-butanetetracarboxylate, 1,2,3,4,5,6-benzenehexacarboxylate) in aqueous solution are reported at t = 25 °C and I = 0 mol l-1. Thermodynamic parameters obtained are analysed to formulate empirical predictive relationships as a function of the number of carboxylate groups of the ligand and the charge of the alkyltin(IV) cation. By using the thermodynamic stability parameters of complexes formed, the sequestering power of some ligands investigated towards alkyltin(IV) cations at different pH values is determined and discussed.

 

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Stille cross-coupling reaction using Pd/BaSO4 as catalyst reservoir (p 39-42)
Aline Viana Coelho, Andréa Luzia F. de Souza, Paulo G. de Lima, James L. Wardell, O. A. C. Antunes
Published Online: Dec 18 2007 6:29AM
DOI: 10.1002/aoc.1347

 

Stille cross-coupling reactions between iodobenzene and tributylphenyltin were carried out in ethanol/water solution using different amounts of Pd/BaSO4 as catalyst reservoir in a ligand-free system and high yields were obtained. Other substituted biaryls were obtained with good yields. The catalyst can be reused up to three times with some loss in activity. Filtration of the catalyst and product extraction yielded a solution thatept its activity, showing the presence of Pd(0)/Pd(II) species that can be regarded as the true catalysts. Interestingly, both 2-bromotiophene and chlorobenzene yielded the desired corresponding reaction products.

 

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Synthesis and spectroscopic characterization of new triorganotin(IV) complexes with the bis(1-methyl-1H-imidazol-2-ylthio)acetate ligand: effects on trout erythrocyte components (p 43-48)
Simone Alidori, Filippo Cocchioni, Giancarlo Falcioni, Donatella Fedeli, Gaia Emanuela Gioia Lobbia, Marilena Mancini, Maura Pellei, Carlo Santini
Published Online: Dec 19 2007 6:17AM
DOI: 10.1002/aoc.1348

 

Triorganotin(IV) derivatives have been synthesized from reaction between R3SnCl acceptors and the new sodium bis(1-methyl-1H-imidazol-2-ylthio)acetate ligand. The toxic effects shown by these compounds on trout erythrocyte components evidenced that their toxicity depends on the nature and on the lipophilicity of the substitutents on the metal centre.

 

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Dependence of CO oxidation on Pt nanoparticle shape: a shape-selective approach to the synthesis of PEMFC catalysts (p 49-54)
Sachininge, Christian Urgeghe, Achille De Battisti, Helmut Bönnemann
Published Online: Dec 18 2007 6:29AM
DOI: 10.1002/aoc.1349

 

In real catalyst systems, it is difficult to establish a correlation between catalytic properties and the shape of the active catalytic particles. In this paper we present a clear shape dependence of the catalytic properties of a Vulcan-supported fuel cell catalyst having 4 nm cubo-octahedral platinum(0) nanocrystallites with (111) and (100) surfaces stablizied by sodium polyacrylate. The electrode materials were characterized by CO-stripping cyclic voltammetry and transmission electron microscopy.

 

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A facile synthesis and asymmetric catalytic activity of new 3-substituted chiral BINOL ligands (p 55-58)
Bing Liu, Cao Fang, Zhi-Bing Dong, Jin-Shan Li
Published Online: Jan 2 2008 4:56AM
DOI: 10.1002/aoc.1350

 

Three new chiral ligands (S)-3-(1H-imidazol-1-yl)methyl-1,1-binaphthol [(S)-1], (S)-3-(1H-1,2,3-benzotriazol-1-yl)methyl-1,1-binaphthol [(S)-2] and (S)-3-(2H-1,2,3-benzotriazol-2-yl)methyl-1,1-binaphthol [(S)-3], were prepared by a simple method. They showed moderate catalytic properties for the asymmetric addition of diethylzinc to benzaldehyde in the presence of titanium tetraisopropoxide.

 

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Synthesis of novel rhodium-xylyl linked N-heterocyclic carbene complexes as hydrosilylation catalysts (p 59-66)
Ismail Özdemir, Serpil Demir, Onur Scedilahin, Orhan Büyükgüngör, Bekir Çetinkaya
Published Online: Jan 8 2008 3:59AM
DOI: 10.1002/aoc.1353

 

Rhodium-xylene bridged diimidazolidin-2-ylidene complexes have been found to be active catalysts for the hydrosilylation of acetophenone derivatives.

 

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Book Reviews

Edited By William B.Tolman. Activation of small molecules, organometallic and bioinorganic perspectives Wiley-VCH, 2006, 364pp; ISBN-13 978-3-527-313312-5 (p 67)
Robin N. Perutz
Published Online: Jan 21 2008 3:19AM
DOI: 10.1002/aoc.1342

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Edited by Guidoickelbick. Hybrid Materials: Synthesis, Characterization, and Applications Wiley-VCH, 2006, 516pp; ISBN 3527312994(Hardback) (p 68)
H. C. Greenwell
Published Online: Jan 21 2008 3:19AM
DOI: 10.1002/aoc.1364

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