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Volume 23 Issue 4 , Pages 135 - 171 (April 2009)


Full Papers

Preparation and catalytic properties of bis(imino)pyridine palladium(II) complexes as efficient catalysts for Suzuki cross-coupling reaction in water (p 135-139)
Ping Liu, Wenzhen Zhang, Ren He
Published Online: Mar 16 2009 10:58AM
DOI: 10.1002/aoc.1481

 

The air- stable bis(imino)pyridine palladium(II) complexes have been synthesized and the complex 12 proved to be highly efficient catalyst for Suzuki coupling reaction between aryl bromides and arylboronic acids in water; Pd black was not observed. The recycling and reuse of the catalysts have also been investigated, for up to three cycles, and complex 12 still exhibited good activity.

 

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Ecofriendly synthesis, antimicrobial and antispermatogenic activity of triorganotin(IV) complexes with 4prime-nitrobenzanilide semicarbazone and 4prime-nitrobezanilide thiosemicarbazone (p 140-149)
Pratibha Chaudhary, Monika Swami, D.. Sharma, R. V. Singh
Published Online: Mar 16 2009 10:58AM
DOI: 10.1002/aoc.1484

 

New triorganotin(IV) complexes with 4-nitrobenzanilide semicarbazone and 4-nitrobenzanilide thiosemicarbazone have been synthesized under microwave irradiation and characterized by elemental analysis, conductance measurements, molecular weight determinations and spectral data, viz., IR, UV-Visible, 1H, 13C and 119Sn NMR. Both the ligands and their triorganotin(IV) complexes have been tested it in vitro against some pathogenic fungi and bacteria. The biochemical analyses were also performed on blood samples and reproductive organs of male rats to assess the fertility and reproductive organ weights.

 

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Hemilabile-coordinated copper promoted amination of aryl halides with ammonia in aqueous ethylene glycol under atmosphere pressure (p 150-153)
Zhennü Guo, Jiayi Guo, Ying Song, Limin Wang, Gang Zou
Published Online: Mar 16 2009 10:58AM
DOI: 10.1002/aoc.1485

 

Direct amination of aryl iodides and bromides with ammonia under 1 atm pressure has been effected with hemilabile coordinated copper species generated in situ from copper(I) halides or copper metal in aqueous ethylene glycol, producing primary aromatic amines in good yields.

 

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[Pt(topy)(Htopy)(ONO2)] complex (Htopy = 2-p-tolylpyridine) and its analogs: 195Pt NMR spectra and fabrication of light-emitting devices (p 154-160)
Hiroto Fukuda, Yui Yamada, Daisuke Hashizume, Toshio Takayama, Masatoshi Watabe
Published Online: Mar 16 2009 10:58AM
DOI: 10.1002/aoc.1486

 

We report fast, high-yield syntheses of a series of [Pt(CN)(HCN)X] complexes, where HCN is 2-phenylpyridine (Hppy) or 2-p-tolylpyridine (Htopy) and X- is Cl-, Br-, I-, ONO2-, NO2- or SCN-. The structure of [Pt(topy)(Htopy)(ONO2)] was analyzed by single-crystal X-ray diffraction. Substitution of Cl- with Br- or I- in our complexes shifted the 195Pt NMR peaks upfield in the order Cl- < Br- < I-, but the magnitudes of their shifts were one-tenth those observed for non-cyclometalated platinum(II) complexes

 

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Hydrosilylation conditions applied on alkenyl benzylated xyloses: selective reduction and isomerization (p 161-164)
Caroline Hadad, Sandrine Bouquillon, Dominique Harakat, Jacques Muzart
Published Online: Mar 16 2009 10:58AM
DOI: 10.1002/aoc.1487

 

Hydrosilylation of benzylated alkenyl pentosides was studied employing different catalysts. Major reactions observed were reduction and isomerization of the terminal double bond without debenzylation of the sugar moiety.

 

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ZrOCl2·8H2O: a highly efficient catalyst for the synthesis of 1,8-dioxo-octahydroxanthene derivatives under solvent-free conditions (p 165-169)
Hong-Yan Lü, Jian-Jiong Li, Zhan-Hui Zhang
Published Online: Mar 16 2009 10:58AM
DOI: 10.1002/aoc.1488

 

ZrOCl2·8H2O has been found to be an efficient catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes from aldehydes and 5,5-dimethylcyclohexane-1,3-dione under solvent-free conditions.

 

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Book Reviews

Donald W. Braben Scientific Freedom: The Elixir of Civilization John Wiley & Sons; March 2008 184 pages; ISBN-10: 0-470-22654-4 ISBN-13: 978-0-470-22654-4 (p 170-171)
Terencearran
Published Online: Mar 16 2009 10:58AM
DOI: 10.1002/aoc.1483

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