Royal Society of Chemistry

Quaternization and oxidation reactions of cyclodiphosphazane derivatives and their copper(I) and gold(I) complexes

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8835-8848
DOI: 10.1039/C4DT00801D, PaperMaravanji S. Balakrishna, Devarajan Suresh, Guddekoppa S. Ananthnag, Joel T. Mague
Quaternization reactions of various cyclodiphosphazanes and their transition metal (CuI and AuI) complexes are described.
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Ba2B10O17: a new centrosymmetric alkaline-earth metal borate with a deep-UV cut-off edge

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8905-8910
DOI: 10.1039/C4DT00546E, PaperLili Liu, Xin Su, Yun Yang, Shilie Pan, Xiaoyu Dong, Shujuan Han, Min Zhang, Jing Kang, Zhihua Yang
Ba2B10O17, a new barium borate, with a band-gap of 5.97 eV, possesses a wide transmission range from 180 to 3000 nm.
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Predominance of covalency in water-vapor-responsive MMX-type chain complexes revealed by 129I Mossbauer spectroscopy

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8767-8773
DOI: 10.1039/C4DT00627E, PaperHiroaki Iguchi, Shinji Kitao, Makoto Seto, Shinya Takaishi, Masahiro Yamashita
129I Mossbauer spectroscopy was applied to water-vapor-responsive MMX-type quasi-one-dimensional iodide-bridged Pt complexes (MMX chains) in order to investigate their electronic state quantitatively.
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Insertion of alkynes into Pt-X bonds of square planar [PtX2(N^N)] (X = Cl, Br, I) complexes

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8826-8834
DOI: 10.1039/C4DT00679H, PaperOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Michele Benedetti, Vincenza Lamacchia, Daniela Antonucci, Paride Papadia, Concetta Pacifico, Giovanni Natile, Francesco P. Fanizzi
New [PtX(Me2phen)([small eta]1-E-CH[double bond, length as m-dash]CHX)] and [PtX(Me2phen)([small eta]1-E-CH[double bond, length as m-dash]CHX)([small eta]2-CH[triple bond, length as m-dash]CH)] complexes were discovered by studying the reactivity of [PtX2(N-N)] (X = Br, I) with acetylene.
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Bis(phosphinoselenoic amides) as versatile chelating ligands for alkaline earth metal (Mg, Ca, Sr and Ba) complexes: syntheses, structure and [varepsilon]-caprolactone polymerisation

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8757-8766
DOI: 10.1039/C4DT00669K, PaperRavi K. Kottalanka, Harinath Adimulam, Jayeeta Bhattacharjee, H. Vignesh Babu, Tarun K. Panda
A series of alkaline earth metal (Mg, Ca, Sr, Ba) complexes with the bis(phosphinoselenoic amine) ligand have been reported and the complexes are utilized as catalysts for the ROP of [varepsilon]-caprolactone.
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Photochemical generation and kinetic studies of a putative porphyrin-ruthenium(V)-oxo species

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8749-8756
DOI: 10.1039/C4DT00649F, PaperRui Zhang, Eric Vanover, Weilong Luo, Martin Newcomb
A putative porphyrin-ruthenium(V)-oxo species was produced either by photo-disproportionation of a bis-porphyrin-diruthenium(IV)-[small mu ]-oxo dimer or photolysis of a porphyrin-ruthenium(III) N-oxide adduct.
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Step-by-step covalent modification of Cr-templated Anderson-type polyoxometalates

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8587-8590
DOI: 10.1039/C4DT00033A, CommunicationChang-Gen Lin, Wei Chen, De-Liang Long, Leroy Cronin, Yu-Fei Song
A series of substituted Anderson-type polyoxometalates including mono-substituted, asymmetric bi-substituted, and symmetrical bi-substituted have been synthesized using a step-by-step approach.
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Chemical bond properties and charge transfer bands of O2--Eu3+, O2--Mo6+ and O2--W6+ in Eu3+-doped garnet hosts Ln3M5O12 and ABO4 molybdate and tungstate phosphors

Dalton Transactions - 28 May, 2014 - 07:17

Dalton Trans., 2014, 43,8814-8825
DOI: 10.1039/C4DT00674G, PaperXiaoguang Liu, Ling Li, Hyeon Mi Noh, Byung Kee Moon, Byung Chun Choi, Jung Hyun Jeong
With the increasing environmental factor he, their O-Mo or O-W or O-Eu CT energy decreases and FWHM increases.
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A rapid entry to amino acid derived diverse 3,4-dihydropyrazines and dihydro[1,2,3]triazolo[1,5-a]pyrazines through 1,3-dipolar cycloaddition

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3976-3985
DOI: 10.1039/C4OB00639A, PaperSaurav Bera, Gautam Panda
Practical synthesis of diverse 3,4-dihydropyrazines, 6,7-dihydro-[1,2,3]triazolopyrazines and 7,8-dihydro-[1,2,3]triazolodiazepines through intramolecular 1,3-dipolar cycloaddition from amino acid derived intermediates is described.
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Fast imine equilibration and its consequences for the evaluation of dynamic combinatorial libraries

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3827-3830
DOI: 10.1039/C4OB00507D, CommunicationK. Ziach, A. Kulesza, J. Jurczak
An example of the interplay between the templation and a very fast reequilibration of a DCL of imines that occurs upon a solvent change is reported. Such seemingly "irrelevant" details of the procedure like imine dissolution time may dictate the outcome of the whole reaction.
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Protecting group free synthesis of urea-linked glycoconjugates: efficient synthesis of [small beta]-urea glycosides in aqueous solution

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3924-3931
DOI: 10.1039/C3OB42452A, PaperYoshiyasu Ichikawa, Takahiro Minami, Shohei Kusaba, Nobuyoshi Saeki, Yuta Tonegawa, Yumiko Tomita, Keiji Nakano, Hiyoshizo Kotsuki, Toshiya Masuda
The one step process, involving reactions between urea and protecting group free D-glucose, N-acetyl-D-glucosamine or D-xylose in acidic aqueous solution, furnishes the corresponding [small beta]-urea glycosides.
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PEGylated meso-arylporpholactone metal complexes as optical cyanide sensors in water

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3991-4001
DOI: 10.1039/C4OB00697F, PaperJill L. Worlinsky, Steven Halepas, Christian Bruckner
A number of water-soluble metal complexes of PEGylated meso-fluorophenylporpholactones display a specific optical response upon addition of cyanide.
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Degradation of [small alpha]-melanocyte-stimulating hormone photosensitized by pterin

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3877-3886
DOI: 10.1039/C4OB00434E, PaperCarolina Castano, Carolina Lorente, Nathalie Martins-Froment, Esther Oliveros, Andres H. Thomas
The reaction is initiated by an electron transfer and produces chemical changes in at least tryptophan and tyrosine residues.
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Convergent and enantioselective syntheses of cytosolic phospholipase A2[small alpha] inhibiting N-(1-indazol-1-ylpropan-2-yl)carbamates

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,4021-4030
DOI: 10.1039/C4OB00535J, PaperTom Sundermann, Martina Arnsmann, Julian Schwarzkopf, Walburga Hanekamp, Matthias Lehr
A convergent synthesis for 4 and enantioselective syntheses for (R)-4 and (S)-4 starting from a (R)-serine derived oxazolidine were developed.
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19F NMR spectroscopy monitors ligand binding to recombinantly fluorine-labelled b[prime or minute]x from human protein disulphide isomerase (hPDI)

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3808-3812
DOI: 10.1039/C4OB00699B, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Rose Curtis-Marof, Denisa Doko, Michelle L. Rowe, Kirsty L. Richards, Richard A. Williamson, Mark J. Howard
Fluoroindole recombinant protein labelling enables a 19F NMR study to observe protein-ligand binding and dissociation constant determination.
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Synthesis and properties of chemiluminescent acridinium ester labels with fluorous tags

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3887-3901
DOI: 10.1039/C4OB00456F, PaperAnand Natrajan, David Wen, David Sharpe
Acridinium dimethylphenyl esters are highly sensitive chemiluminescent labels that are used in clinical diagnostics.
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Synthesis of new asymmetric xanthene dyes via catalyst-free SNAr with sulfur nucleophiles

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3816-3820
DOI: 10.1039/C4OB00533C, CommunicationMichaela Kotaskova, Okan Osman Oglou, Mark Helm
An unusual SNAr with sulfur nucleophiles on electron rich aromatic xanthenes affords a new class of photostable asymmetric thioether xanthene dyes.
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Development of a traceable linker containing a thiol-responsive amino acid for the enrichment and selective labelling of target proteins

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3821-3826
DOI: 10.1039/C4OB00622D, CommunicationJun Yamamoto, Masaya Denda, Nami Maeda, Miku Kita, Chiaki Komiya, Tomohiro Tanaka, Wataru Nomura, Hirokazu Tamamura, Youichi Sato, Aiko Yamauchi, Akira Shigenaga, Akira Otaka
A traceable linker that is potentially applicable to identification of a target protein of interest was developed.
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First total syntheses of chrestifoline-B and (+/-)-chrestifoline-C, and improved synthetic routes to bismurrayafoline-A, bismurrayafolinol and chrestifoline-D

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3831-3835
DOI: 10.1039/C4OB00609G, CommunicationCarsten Borger, Arndt W. Schmidt, Hans-Joachim Knolker
We describe an efficient synthesis of the methylene-bridged biscarbazole alkaloids bismurrayafoline-A, bismurrayafolinol and chrestifoline B-D using an Ullmann-type coupling at the benzylic position.
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Synthesis of [small alpha],[small beta]-unsaturated amides and iminocoumarins from N,N-disulfonyl ynamides with aldehydes via the ketenimine intermediate

Org. and Biomol. Chem. - 27 May, 2014 - 21:17

Org. Biomol. Chem., 2014, 12,3986-3990
DOI: 10.1039/C4OB00513A, PaperLian Yu, Jian Cao
A novel synthesis of [small alpha],[small beta]-unsaturated amides from N,N-disulfonyl ynamides with aldehydes was developed. By utilization of salicylaldehydes, a variety of substituted iminocoumarins were prepared.
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