Chem. Commun.

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Phosphine-catalyzed [4+1] annulation of 1,3-(aza)dienes with maleimides: highly efficient construction of azaspiro[4.4]nonenes

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC05624H, CommunicationMei Yang, Tianyi Wang, Shixuan Cao, Zhengjie He
A novel [4+1] annulation reaction of 1,3-(aza)dienes with non-allylic phosphorus ylides is reported for the first time.
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Bio-inspired enol-degradation for multipurpose oxygen sensing

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC05831C, CommunicationYu-Mo Zhang, Xiaojun Wang, Wen Li, Weiran Zhang, Minjie Li, Sean Xiao-An Zhang
Inspired by the enol-degradation of luciferin, a new oxygen sensor with oppositely changed color and fluorescence has been designed, and prototype of sensor strip has been developed to practical application.
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Plasmon-assisted and visible-light induced graphene oxide reduction and efficient fluorescence quenching

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC05136J, CommunicationDinesh Kumar, Sandeep Kaur, Dong-Kwon Lim
The use of plasmonic nanoparticles accelerated visible-light induced reduction of graphene oxide at room temperature.
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Mn(II)/O2-promoted oxidative annulation of vinyl isocyanides with boronic acids: synthesis of multi-substituted isoquinolines

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC06427E, CommunicationHao Wang, Yang Yu, Xiaohu Hong, Bin Xu
An efficient manganese(II)/O2-promoted oxidative radical cascade reaction was developed for the modular synthesis of multi-substituted isoquinolines from easily accessible vinyl isocyanides and boronic acids.
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Synthesis and vibrational spectroscopy of 57Fe-labeled models of [NiFe] hydrogenase: first direct observation of a nickel-iron interaction

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC04572F, CommunicationDavid Schilter, Vladimir Pelmenschikov, Hongxin Wang, Florian Meier, Leland B. Gee, Yoshitaka Yoda, Martin Kaupp, Thomas B. Rauchfuss, Stephen P. Cramer
Isotopically labelled Ni57Fe models of the [NiFe] hydrogenase active site have been prepared and studied with nuclear resonant vibrational spectroscopy, enabling direct characterization of metal-metal bonding.
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Enantioselective protonation of [small alpha]-hetero carboxylic acid-derived ketene disilyl acetals under chiral ionic Bronsted acid catalysis

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC06081D, CommunicationDaisuke Uraguchi, Tomohito Kizu, Yuki Ohira, Takashi Ooi
P-Spiro chiral diaminodioxaphosphonium ion discriminates the enantiofaces of [small alpha]-halo and alkoxy carboxylic acid-derived ketene disilyl acetals by the recognition of the electronic difference between two substituents of the ketene disilyl acetal in the proton-transfer event.
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Photodegradable and size-tunable single-chain nanoparticles prepared from a single main-chain coumarin-containing polymer precursor

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC06629D, CommunicationWeizheng Fan, Xia Tong, Qiang Yan, Shangyi Fu, Yue Zhao
A single linear polymer precursor was used to prepare photodegradable single-chain nanoparticles of variable sizes.
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Diselenolodiselenole: a selenium containing fused heterocycle for conjugated systems

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC05439C, CommunicationAnjan Bedi, Sashi Debnath, Sanjio S. Zade
Diselenolodiselenole (C4Se4) derivatives are synthesized for the first time by heating substituted diaryl diynes with elemental selenium. The optical, electrochemical and structural properties of C4Se4-derivatives are tuned by varying end-capping aromatic substituents.
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Nanoscale coordination polymers with ligand-centred pH-responses and spin transition

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC05299D, CommunicationDaniel Ruiz-Molina, Fernando Novio, Fabiana Nador
A bis-catechol ligand connected through an imine bond is used to fabricate switchable coordination polymer particles with pH-tuned spin transition responses
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Carbon Monoxide in Controlling the Surface Formation of Group VIII Metal Nanoparticles

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC05770H, CommunicationSang Youp Hwang, Mingzhen Zhang, Changlin Zhang, Buyong Ma, Jie Zheng, Zhenmeng Peng
Group VIII metal nanoparticles with variant morphologies were synthesized under carbon monoxide atmosphere. The important roles of CO in determining the surface formation of growing particles were studied by both...
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Quantifying chloride binding and salt extraction with poly(methyl methacrylate) copolymers bearing aryl-triazoles as anion receptor side chains

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC03362K, CommunicationKevin P. McDonald, Bo Qiao, Eric B. Twum, Semin Lee, Patrick J. Gamache, Chun-Hsing Chen, Yi Yi, Amar H. Flood
Copolymers of methyl methacrylate and aryl-triazole based anion receptors were quantitatively analyzed.
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Clathrates of TETROL: selective inclusion of methylcyclohexanones in their energetically unfavorable axial methyl conformations

21 September, 2014 - 07:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC06826B, CommunicationB. Barton, M. R. Caira, E. C. Hosten, C. W. McCleland, S. Weitz
TETROL, surprisingly, includes 3- and 4-methylcyclohexanone exclusively in their energetically disfavoured axial conformations.
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Catalytic Enantioselective Bromoamination of Allylic Alcohols

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC05772D, CommunicationJuan Qi, Guo-Tao Fan, Jie Chen, Ming-Hui Sun, Yu-Ting Dong, Ling Zhou
An enantioselective bromoamination of allylic alcohols has been developed for the first time using a newly designed cinchona-derived thiourea as the catalyst, N,N-dibromo-4-nitrobenzenesulfonamide as bromine and amine sources.
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Direct core functionalisation of naphthalenediimides by iridium catalysed C-H borylation

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC06522K, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Catherine L Lyall, Camilla C Shotton, Montserrat Perez-Salvia, G. Dan Pantos, Simon Eliot Lewis
We report the first boron-substituted naphthalenediimides (NDIs), prepared by iridium catalysed C-H activation. When the NDI substrates bear N-benzyl substituents, the naphthyl NDI core is borylated in preference, suggestive of...
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The perils of rational design - unexpected irreversible elimination of fluoride from 3-fluoro-2-methylacyl-CoA esters catalysed by [small alpha]-methylacyl-CoA racemase (AMACR; P504S)

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC06127F, CommunicationMaksims Yevglevskis, Guat Ling Lee, Michael D Threadgill, Timothy J Woodman, Matthew David Lloyd
[small alpha]-Methylacyl-CoA racemase (AMACR; P504S) catalyses 'racemization' of 2-methylacyl-CoAs, the activation of R-ibuprofen and is a promising cancer drug target. Human recombinant AMACR 1A catalyses elimination of 3-fluoro-2-methyldecanoyl-CoAs to give E-2-methyldec-2-enoyl-CoA...
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A 2D azine-linked covalent organic framework for gas storage applications

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC05665E, CommunicationXiaoming Liu, Zhongping Li, Xiao Feng, Yongcun Zou, Yuwei Zhang, Hong Xia, Ying Mu
A new azine-linked covalent organic framework, ACOF-1 was synthesized by condensation of hydrazine hydrate and 1,3,5-triformylbenzene under solvothermal conditions. ACOF-1 has high surface area and small pore size, and it...
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Fragmentation of the quinoxaline N-oxide bond to release the .OH radical upon one-electron bioreduction

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC05657D, CommunicationRobert Anderson, Pooja Yadav, Andrew Marshall, Johannes Reynisson, William A Denny, MP Hay
The [round bullet, filled]OH radical is released from 3-trifluoromethyl-quinoxaline 1,4-dioxides upon one-electron reduction by cytochrome P450 oxidoreductase. This process effectively competes with back oxidation of the intermediate radical anion by oxygen and...
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Enhanced Photocatalytic Hydrogen Evolution from Water by Niobate Single Molecular Sheets and Ensembles

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC04726E, CommunicationKeizo Nakagawa, Tiantian Jia, Weiran Zheng, Simon Fairclough, Masahiro Katoh, Shigeru Sugiyama, Edman Tsang
We report single molecular sheets of niobate prepared by a simple bottom-up approach using hydrothermal synthesis of niobium ethoxide with the aid of triethanolamine as a structural modifier: the high...
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Studies Towards the Synthesis of Halomon: Asymmetric Hexafunctionalisation of Myrcene

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC06234E, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.D. Christopher Braddock, Alison X Gao, Andrew J. P. White, Mariko Whyte
A novel dihydroxylation-dibromination-dihydroxylation sequence employing in situ protection of diols as boronate esters during the dihydroxylation reactions provides the first enantiomerically pure hexafunctionalised myrcene derivative. This concise four-step asymmetric sequence...
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Layer-separated distribution of nitrogen doped graphene by wrapping on carbon nitride tetrapods for enhanced oxygen reduction reaction in acid medium

21 September, 2014 - 07:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC06180B, CommunicationSreekuttan M Unni, Rajith Illathvalappil, Pranav K Gangadharan, Siddheshwar N Bhange, Sreekumar Kurungot
Layer-separated 3-D nitrogen doped graphene (NG) with accessible interstitial surface and modulated activity characteristics for oxygen reduction in acid medium could be prepared by wrapping NG sheets on in-situ generated...
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