Chem. Commun.

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Organocatalytic one-pot 1,4-/1,6-/1,2-addition sequence for the stereocontrolled formation of six consecutive stereocenters

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09730K, CommunicationDieter Enders, Pankaj Chauhan, Suruchi Mahajan, Gerhard Raabe
An unprecedented stereoselective organocatalytic one-pot 1,4-/1,6-/1,2-addition sequence between [small beta]-dicarbonyl compounds, [small beta]-nitroalkenes and 4-nitro-5-styrylisoxazoles sequentially catalyzed by low loading of a squaramide catalyst and an achiral base has been developed. The...
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An easy-to-detect nona-arginine peptide for epidermal targeting

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08737B, CommunicationSylvain Clede, N Delsuc, C Laugel, Francois Lambert, Christophe Sandt, Arlette BAILLET-GUFFROY, Clotilde Policar
A correlative approach combining synchrotron radiation based IR microscopy and fluorescence microscopy enabled the successful detection and quantification of a nona-arginine peptide labelled with a Single Core Multimodal Probe for...
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Active site-directed proteomic probes for adenylation domains in nonribosomal peptide synthetases

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09412C, CommunicationSho Konno, Fumihiro Ishikawa, Takehiro Suzuki, Naoshi Dohmae, Michael Burkart, Hideaki Kakeya
We describe a general strategy for selective chemical labeling of individual adenylation (A) domains in nonribosomal peptide synthetases (NRPSs) using active site-directed proteomic probes coupled to 5[prime or minute]-O-N-(aminoacyl)sulfamoyladenosine (AMS) scaffold with...
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The Enantioselective Total Synthesis of (+)-Clusianone

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09701G, CommunicationFiene Horeischi, Claudia Guttroff, Bernd Johannes Plietker
(+)-Clusianone, an exo-type B PPAP with reported anti-HIV and chemoprotective activities, was synthesized within eleven steps with 97 % ee starting from acetylacetone. An enantioselective decarboxylative Tsuji-Trost-allylation plus a Ru-catalyzed...
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Enantioselective Gold Catalyzed Dearomative [2+2]-Cycloaddition between Indoles and Allenamides

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08736D, CommunicationMinqiang Jia, Magda Monari, Qing-Qing Zhang, Marco Bandini
The highly enantioselective synthesis of densely functionalized 2,3-indoline-cyclobutanes by means of chiral gold catalysis is presented. Intermolecular formal [2+2]-cycloaddition reactions between substituted indoles and allenamides enabled direct access to methylenecyclobutane-fused...
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A long-life Na-air battery based on soluble NaI catalyst

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08439J, CommunicationZhengwen Fu, Wen-Wen Yin, Zulipiya Shadike, Ying Yang, Fei Ding, Lin Sang, Hong Li
Na-air battery with NaI dissolved in typical organic electrolyte could run up to 150 cycles with a capacity limit of 1000 mAh g-1. The low charge voltage plateau of 3.2...
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Rh(III)-catalyzed C-H activation/cyclization of benzamides and diazo compounds to form isocoumarins and [small alpha]-pyrones

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09314C, CommunicationPei Nian Liu, Xing Guang Li, Min Sun, Kai Liu, Qiao Jin
Rhodium-catalyzed intermolecular cyclization of benzamides and diazo compounds via C-H activation has been achieved to construct C-C/C-O bonds for the first time. The process provides a facile approach for the...
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Non-aqueous semi-solid flow battery based on Na-ion chemistry. P2-type NaxNi0.22Co0.11Mn0.66O2 - NaTi2(PO4)3

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09597A, CommunicationEdgar Ventosa, Daniel Buchholz, Stefan Klink, Cristina Flox, Luciana Gomes Chagas, Christoph Vaalma, Wolfgang Schuhmann, Stefano Passerini, Joan R. Morante
We report the first proof of concept for a non-aqueous semi-solid flow battery (SSFB) based on Na-ion chemistry using P2-type NaxNi0.22Co0.11Mn0.66O2 and NaTi2(PO4)3 as positive and negative electrodes, respectively. This...
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Thermoresponsive self-assembled cyclodextrin-end-decorated PNIPAM for aqueous catalysis

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09052G, CommunicationJonathan Potier, Stephane Menuel, Joel Lyskawa, David Fournier, Francois Stoffelbach, Eric Monflier, Patrice Woisel, Frederic Hapiot
The catalytic performance of thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) functionalized at the terminal position with randomly methylated [small beta]-cyclodextrin was demonstrated in the aqueous Rh-catalysed hydroformylation of higher olefins.
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Asymmetric Kita spirolactonisation catalysed by anti-dimethanoanthracene-based iodoarenes

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09724F, CommunicationStephen Murray, Hasim Ibrahim
Enantiopure C2-symmetric iodoarenes based on the rigid all-carbon anti-dimethanoanthracene framework are shown to catalyse the asymmetric oxidative Kita spirolactonisation of propanoic acid-tethered 1-naphthols with significant levels of asymmetric induction of...
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Structure-guided design and biosynthesis of a novel FR-900098 analogue as a potent Plasmodium falciparum 1-deoxy-d-xylulose-5-phosphate reductoisomerase (Dxr) inhibitor

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09181G, CommunicationRyan E. Cobb, Brian Bae, Zhi Li, Matthew A. DeSieno, Satish Nair, Huimin Zhao
We report here the enzymatic biosynthesis of FR-900098 analogues and establish an in vivo platform for the biosynthesis of N-propionyl derivative FR-900098P. FR-900098P is found to be a significantly more...
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Transfer Hydrogenation of Unsaturated Bonds in the Absence of Base Additives Catalyzed by a Cobalt-Based Heterogeneous Catalyst

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08946D, CommunicationJilan Long, Ying Zhou, Yingwei Li
A novel non-noble Co@C-N catalytic system has been developed for catalytic transfer hydrogenation reactions. Co@C-N was found to be highly active and selective in the hydrogenation of a variety of...
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High-temperature and high-resolution crystallography of thermostable copper nitrite reductase

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09553G, CommunicationYohta Fukuda, Tsuyoshi Inoue
The 1.55 A resolution thermostable copper nitrite reductase structure at 320 K displayed a near-bidentate binding mode of nitrite distinct from a monodentate mode in a cryogenic structure. To our...
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A click chemistry approach to site-specific immobilization of a small laccase enables efficient direct electron transfer in a biocathode

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09179E, CommunicationZhilei Chen, Wenshie Liu, Dongli Guan, Yadgiri Kurra
Controlled orientation of a small laccase on a multi-walled carbon nanotube electrode was achieved via copper-free click chemistry mediated immobilization. Modification of the enzyme was limited to only the tethering...
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Programmed chemo-enzymatic synthesis of the oligosaccharide component of a carbohydrate-based antibacterial vaccine candidate

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08805K, CommunicationStephane Salamone, Catherine Guerreiro, Emmanuelle Cambon, Isabelle Andre, Magali Remaud-Simeon, Laurence A. MULARD
A powerful chemo-enzymatic synthesis of the pentadecasaccharide hapten involved in the first synthetic carbohydrate-based vaccine candidate against endemic shigellosis is reported. The high yielding site-selective [small alpha]-D-glucosylation of a lightly protected...
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Counting quantum dots in aggregates for the detection of biotinylated proteins

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC02918F, Communicationxingbo shi, Suli Dong, Minmin Li, Xiaojun Liu, Yewang Zhang, Qingquan Zhang, Wenfeng Zhao, Chenghua Zong, Hongwei Gai
The amount of nanoparticles in an aggregate or within a diffraction limit spot is difficult to determine without the use of high-resolution electron microscopy. We develop a method to quantify...
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On the Antibacterial Mechanism of Graphene Oxide (GO) Langmuir-Blodgett Films

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC07836E, CommunicationJoey Mangadlao, Catherine Santos, Mary Jane Felipe, Christopher Leon, Debora Rodrigues, Gobet Advincula
Langmuir-Blodgett (LB) technique was used to immobilize flat graphene oxide (GO) sheets on PET substrate to ascertain as to whether the edges of GO play an integral part in its...
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A CuS-Based Chemical Tongue Chip for Pattern Recognition of Proteins and Antibiotics-Resistant Bacteria

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08863H, CommunicationXiang Ran, Fang Pu, Jinsong Ren, Xiaogang Qu
In this work we developed a CuS based sensor array for highly stablility and selectivity to complex protein analytes on a quartz chip. Our platform also exhibited the excellent discrimination...
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A supramolecular keypad lock

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC09336D, CommunicationCatia Parente Carvalho, Zoe Dominguez, Jose P Da Silva, Uwe Pischel
The reversible photoswitching between an anthracene derivative and its [4+4] dimer, using the template effect of the CB8 macrocycle, was demonstrated. This example of supramolecular chemistry in water was harnessed...
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Expanding the Toolbox of Asymmetric Organocatalysis by Continuous-flow Process

23 December, 2014 - 05:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08748H, Feature ArticleRodrigo Octavio M A de Souza, Leandro Soter de Mariz e Miranda, Fernanda Finelli
Despite all organic chemistry reaction methodologies already developed for continuous flow process, asymmetric synthesis is the one who has gained less attention during these years. Since the pioneering work of...
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