Org. and Biomol. Chem.

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In tandem or alone: a remarkably selective transfer hydrogenation of alkenes catalyzed by ruthenium olefin metathesis catalysts

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2684-2688
DOI: 10.1039/C4OB02480J, PaperOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Grzegorz Krzysztof Zielinski, Cezary Samojlowicz, Tomasz Wdowik, Karol Grela
A remarkably selective system for transfer hydrogenation of alkenes, composed of Grubbs' ruthenium metathesis catalyst and HCOONa/HCOOH, is presented. This system can also be formed directly after a metathesis reaction to effect hydrogenation in a single-pot.
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Photocontrol of ion permeation in lipid vesicles with amphiphilic dithienylethenes

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2652-2663
DOI: 10.1039/C4OB02382J, PaperYamuna S. Kandasamy, Jianxin Cai, Alisha Beler, M.-S. Jemeli Sang, Patrick D. Andrews, R. Scott Murphy
Asymmetrical amphiphilic dithienylethenes have been prepared and photocontrol of ion permeation was observed in lipid vesicles.
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Ligand orientation in a membrane-embedded receptor site revealed by solid-state NMR with paramagnetic relaxation enhancement

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2664-2668
DOI: 10.1039/C4OB02427C, PaperChristopher A. P. Whittaker, Simon G. Patching, Mikael Esmann, David A. Middleton
Paramagnetic relaxation-enhanced solid-state NMR reveals a ouabain analogue with an inverted orientation in the Na,K-ATPase inhibitory site.
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Direct construction of 2-alkylbenzo-1,3-azoles via C-H activation of alkanes for C-C and C-X (X = O, S) bond formation

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2606-2611
DOI: 10.1039/C4OB02488E, PaperArvind K. Yadav, Lal Dhar S. Yadav
2-Alkylated benzo(oxa)thiazoles were prepared directly from simple alkanes and aryl isocyanates/isothiocyanates in a one-pot procedure.
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Phototriggerable peptidomimetics for the inhibition of Mycobacterium tuberculosis ribonucleotide reductase by targeting protein-protein binding

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2612-2621
DOI: 10.1039/C4OB01926A, PaperChristoffer Karlsson, Magnus Blom, Miranda Johansson (nee Varedian), Anna M. Jansson, Enzo Scifo, Anders Karlen, Thavendran Govender, Adolf Gogoll
Peptidomimetic inhibitors with photomodulable affinity for the R1-R2 subunit association site were designed based on the R2-subunit C-terminal.
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Contrasting anion recognition behaviour exhibited by halogen and hydrogen bonding rotaxane hosts

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2582-2587
DOI: 10.1039/C4OB02547D, PaperStuart P. Cornes, Charles H. Davies, David Blyghton, Mark R. Sambrook, Paul D. Beer
A [2]rotaxane anion host that switches selectivity from dihydrogen phosphate to the halides upon substituting a hydrogen bond donor group for a halogen bond donor group within the axle component is described.
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Synthesis of 4-substituted oxazolo[4,5-c]quinolines by direct reaction at the C-4 position of oxazoles

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2600-2605
DOI: 10.1039/C4OB02224F, PaperMahesh Akula, Yadagiri Thigulla, Connor Davis, Mukund Jha, Anupam Bhattacharya
Cu(TFA)2 catalysed synthesis of 4-arylsubstituted oxazolo[4,5-c]quinolines/[1,8] naphthyridines has been described via a modified Pictet-Spengler method, without prefunctionalization of the unreactive 4th position of oxazoles.
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Tandem catalytic oxidative deacetylation of acetoacetic esters and heteroaromatic cyclizations

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2588-2599
DOI: 10.1039/C4OB02441A, PaperYeming Ju, Di Miao, Ruiyang Yu, Sangho Koo
Coupling of ethyl acetoacetate with MVK and with 2-nitrobenzyl bromides, Mn(III)/Co(II)-catalyzed deacetylation, and heterocyclizations provide pyrroles and indoles, respectively.
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A novel Prins cascade process for the stereoselective synthesis of oxa-bicycles

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2669-2672
DOI: 10.1039/C4OB02347A, PaperB. V. Subba Reddy, A. Venkateswarlu, B. Sridevi, Kanakaraju Marumudi, A. C. Kunwar, G. Gayatri
E- and Z-9-Methyldeca-3,8-dien-1-ols undergo smooth cyclization with aldehydes in the presence of 20 mol% AgSbF6 under extremely mild conditions to generate the corresponding oxa-bicycles in good yields with excellent selectivity.
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A comparison of chemiluminescent acridinium dimethylphenyl ester labels with different conjugation sites

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2622-2633
DOI: 10.1039/C4OB02528H, PaperAnand Natrajan, David Wen
Chemiluminescent acridinium esters containing conjugation sites at the acridinium nitrogen show increased light yield when labeled to proteins.
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A facile and high-yield formation of dipyrrin-boronic acid dyads and triads: a light-harvesting system in the visible region based on the efficient energy transfer

22 February, 2015 - 15:54

Org. Biomol. Chem., 2015, 13,2574-2581
DOI: 10.1039/C4OB02351J, PaperMasaki Yamamura, Shinya Yazaki, Motofumi Seki, Yasunori Matsui, Hiroshi Ikeda, Tatsuya Nabeshima
Artificial light-harvesting systems, Ar,O-BODIPY dyads and triads conjugated with a light harvester, were synthesized in high yield by the reaction of an N2O2-type dipyrrin with boronic acids.
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Correction: A novel enantioselective synthesis of 6H-dibenzopyran derivatives by combined palladium/norbornene and cinchona alkaloid catalysis

18 February, 2015 - 14:54
Org. Biomol. Chem., 2015, 13,2481-2481
DOI: 10.1039/C5OB90021B, CorrectionDi Xu, Li Dai, Marta Catellani, Elena Motti, Nicola Della Ca', Zhiming Zhou
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Correction: Using Hansen solubility parameters to study the encapsulation of caffeine in MOFs

18 February, 2015 - 14:54
Org. Biomol. Chem., 2015, 13,2480-2480
DOI: 10.1039/C5OB90016F, CorrectionLorena Paseta, Gregory Potier, Steven Abbott, Joaquin Coronas
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Synthesis of indoles, benzofurans, and related heterocycles via an acetylene-activated SNAr/intramolecular cyclization cascade sequence in water or DMSO

16 February, 2015 - 14:17

Org. Biomol. Chem., 2015, 13,2273-2284
DOI: 10.1039/C4OB02549K, PaperR. Hudson, N. P. Bizier, K. N. Esdale, J. L. Katz
The synthesis of 2-substituted indoles and benzofurans was achieved by nucleophilic aromatic substitution, followed by subsequent 5-endo-dig cyclization between the nucleophile and an ortho acetylene.
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In situ activation of benzyl alcohols with XtalFluor-E: formation of 1,1-diarylmethanes and 1,1,1-triarylmethanes through Friedel-Crafts benzylation

16 February, 2015 - 14:17

Org. Biomol. Chem., 2015, 13,2243-2246
DOI: 10.1039/C4OB02655A, CommunicationJustine Desroches, Pier Alexandre Champagne, Yasmine Benhassine, Jean-Francois Paquin
The Friedel-Crafts benzylation of arenes using benzyl alcohols activated in situ with XtalFluor-E is described. A wide range of 1,1-diarylmethanes and 1,1,1-triarylmethanes were prepared under simple and mild conditions, without the need for a transition metal or a strong Lewis acid.
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Functional chromatographic technique for natural product isolation

16 February, 2015 - 14:17

Org. Biomol. Chem., 2015, 13,2255-2259
DOI: 10.1039/C4OB02292K, CommunicationEric C. Lau, Damian J. Mason, Nicole Eichhorst, Pearce Engelder, Celestina Mesa, E. M. Kithsiri Wijeratne, G. M. Kamal B. Gunaherath, A. A. Leslie Gunatilaka, James J. La Clair, Eli Chapman
Natural product discovery arises through a unique interplay between chromatographic purification and protein affinity.
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Copper-catalyzed oxidative alkenylation of thioethers via Csp3-H functionalization

16 February, 2015 - 14:17

Org. Biomol. Chem., 2015, 13,2264-2266
DOI: 10.1039/C4OB02564D, CommunicationHao Cao, Dong Liu, Chao Liu, Xinquan Hu, Aiwen Lei
The first copper-catalyzed oxidative alkenylation of thioethers via Csp3-H functionalization to construct allylic thioethers is demonstrated.
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Validating the alkene and alkyne hydrophosphonylation as an entry to organophosphonates

16 February, 2015 - 14:17

Org. Biomol. Chem., 2015, 13,2212-2215
DOI: 10.1039/C4OB02501F, PerspectiveAlessandro Dondoni, Alberto Marra
The hydrophosphonylation of terminal alkenes and alkynes by H-phosphonates affords Markovnikov and/or anti-Markovnikov adducts depending on the catalyst (a metal or a radical initiator) and the reaction conditions.
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Sweetness and light: design and applications of photo-responsive glycoconjugates

16 February, 2015 - 14:17

Org. Biomol. Chem., 2015, 13,2216-2225
DOI: 10.1039/C4OB02296C, Review ArticleYingxue Hu, Rico F. Tabor, Brendan L. Wilkinson
Photoswitchable glycoconjugates are promising tools for studying biomolecular interactions and for the development of stimuli-responsive materials.
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A review: microRNA detection methods

16 February, 2015 - 14:17

Org. Biomol. Chem., 2015, 13,2226-2238
DOI: 10.1039/C4OB02104E, Review ArticleTian Tian, Jiaqi Wang, Xiang Zhou
MicroRNA (miRNA) detection is of considerable significance in both disease diagnosis and in the study of miRNA function.
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