Chem. Commun.

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Ligand-controlled divergent formation of alkenyl- or allylboronates catalyzed by Pd, and synthetic applications

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10094-10097
DOI: 10.1039/C4CC04092A, CommunicationAlicia Martos-Redruejo, Ruth Lopez-Duran, Elena Bunuel, Diego J. Cardenas
Pd-catalysed reactions of allyl carbonates containing alkynes with B2(pin)2 afford either alkenylboronates by cascade borylative cyclisation, or allylboronates. The reaction outcome is controlled by a suitable choice of ligands. Boronates have been applied to a number of synthetic applications.
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Structural elucidation of foldamers with no long range conformational order

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10090-10093
DOI: 10.1039/C4CC03822C, CommunicationMayumi Kudo, Victor Maurizot, Hyuma Masu, Aya Tanatani, Ivan Huc
How do partly folded foldamers look like?
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A saponification-triggered gelation of ester-based Zn(II) complex through conformational transformations

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10086-10089
DOI: 10.1039/C4CC03537B, CommunicationAshish Kumar, Mrigendra Dubey, Amit Kumar, Daya Shankar Pandey
Novel saponification-triggered gelation of an ester-based bis-salen Zn(II) complex (1) has been described. Strategic structural modifications in 1 by NaOH, tunes dipolar-/[small pi]-interactions leading to J-aggregation, in turn creation of an inorganic gel material (IGM).
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Polyoxometalate-functionalized metal-organic frameworks with improved water retention and uniform proton-conducting pathways in three orthogonal directions

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10023-10026
DOI: 10.1039/C4CC04009K, CommunicationYiwei Liu, Xiao Yang, Jun Miao, Qun Tang, Shumei Liu, Zhan Shi, Shuxia Liu
Polyoxometalate-functionalized MOFs with uniform proton-conducting pathways in three orthogonal directions realized 5 orders of magnitude increase of proton conduction.
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Charge transfer (CT) mechanochromism: dramatic CT absorption change of crystalline [small pi]-conjugated oligomers containing TCNQ upon mechanical grinding

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10052-10054
DOI: 10.1039/C4CC03879G, CommunicationAtsushi Nagai, Yuki Okabe
New [small pi]-conjugated oligomers with high crystallinity were prepared from the simple solvothermal reaction of squaric acid and diaminopyrenes.
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Tuning the wettability of mesoporous silica for enhancing the catalysis efficiency of aqueous reactions

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10045-10048
DOI: 10.1039/C4CC02988G, CommunicationLuman Fu, Shuru Li, Zhongyuan Han, Huifang Liu, Hengquan yang
A series of mesoporous silica-based catalysts with finely-tuned surface wettability have been synthesized. Their catalysis efficiency towards aqueous hydrogenations is highly dependent on their surface wettability and can be five times higher than that of the commercial Pd/C catalyst.
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Protein-based supramolecular polymers: progress and prospect

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,9997-10007
DOI: 10.1039/C4CC03143A, Feature ArticleQuan Luo, Zeyuan Dong, Chunxi Hou, Junqiu Liu
This feature article highlights recent advances and future trends in protein-based supramolecular polymers that are formed by various non-covalent interactions.
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A novel mechanism for poisoning of metal oxide SCR catalysts: base-acid explanation correlated with redox properties

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10031-10034
DOI: 10.1039/C4CC02991G, CommunicationHuazhen Chang, Junhua Li, Wenkang Su, Yuankai Shao, Jiming Hao
A novel correlation between base-acid properties and redox ability contributes to acid gas poisoning and N2O formation on SCR catalysts.
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Turning unreactive copper acetylides into remarkably powerful and mild alkyne transfer reagents by oxidative umpolung

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10008-10018
DOI: 10.1039/C4CC03198A, Feature ArticleG. Evano, K. Jouvin, C. Theunissen, C. Guissart, A. Laouiti, C. Tresse, J. Heimburger, Y. Bouhoute, R. Veillard, M. Lecomte, A. Nitelet, S. Schweizer, N. Blanchard, C. Alayrac, A.-C. Gaumont
Upon oxidation, copper acetylides formally behave as highly electrophilic species that could be trapped by a wide range of nucleophiles.
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Real-time imaging and local elemental analysis of nanostructures in liquids

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10019-10022
DOI: 10.1039/C4CC02743D, CommunicationEdward A. Lewis, Sarah J. Haigh, Thomas J. A. Slater, Zheyang He, Matthew A. Kulzick, M. Grace Burke, Nestor J. Zaluzec
A new design of in situ liquid cells is demonstrated, providing the first nanometer resolution elemental mapping of nanostructures in solution.
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One-pot enantioselective construction of indoloquinolizidine derivatives bearing five contiguous stereocenters using aliphatic aldehydes, nitroethylenes, and tryptamine

5 August, 2014 - 18:54

Chem. Commun., 2014, 50,10027-10030
DOI: 10.1039/C4CC01929F, CommunicationYu Tan, Han-Lin Luan, Hua Lin, Xing-Wen Sun, Xiao-Di Yang, Han-Qing Dong, Guo-Qiang Lin
An organocatalytic cascade reaction was established for the construction of indoloquinolizidine derivatives bearing five contiguous stereocenters from readily available starting materials.
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Anion-induced dimerization of 5-fold symmetric cyanostars in 3D crystalline solids and 2D self-assembled crystals

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9827-9830
DOI: 10.1039/C4CC03725A, CommunicationBrandon E. Hirsch, Semin Lee, Bo Qiao, Chun-Hsing Chen, Kevin P. McDonald, Steven L. Tait, Amar H. Flood
Anions stabilize stacking of C5-symmetric macrocycles, called cyanostars, into dimers in solution, in solid-state crystals, and in bilayers at the solution-graphite interface.
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Au137(SR)56 nanomolecules: composition, optical spectroscopy, electrochemistry and electrocatalytic reduction of CO2

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9895-9898
DOI: 10.1039/C4CC03424D, CommunicationVijay Reddy Jupally, Asantha C. Dharmaratne, David Crasto, Aron J. Huckaba, Chanaka Kumara, Praneeth Reddy Nimmala, Nuwan Kothalawala, Jared H. Delcamp, Amala Dass
Au137(SR)56 has been synthesized with three ligands and two nano-alloys, isolated and assigned using mass spectrometry tools. UV-Vis-NIR absorption, voltammetry and CO2 reduction properties are also reported.
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[Pd(C[logical and]N)(X)(PPh3)] palladacycles react with 2,4,6-trifluorophenyl boronic acid to give stable transmetallation products of the type [Pd(C[logical and]N)(2,4,6-F3C6H2)(PPh3)]

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9859-9861
DOI: 10.1039/C4CC04203D, CommunicationAnant R. Kapdi, Gopal Dhangar, Jose Luis Serrano, Jose Perez, Luis Garcia, Ian J. S. Fairlamb
Evidence for a direct transmetallation between a palladacycle (containing acetate and imidate pseudohalides) with 2,4,6-trifluorophenyl boronic acid is presented in this paper.
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Carbonylative enantioselective meso-desymmetrization of cis-epoxides to trans-[small beta]-lactones: effect of salen-ligand electronic variation on enantioselectivity

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9842-9845
DOI: 10.1039/C4CC04397A, CommunicationMichael Mulzer, Jessica R. Lamb, Zachary Nelson, Geoffrey W. Coates
Carbonylation catalysts for the desymmetrization of meso-epoxides yielding enantioenriched trans-[small beta]-lactones are reported.
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Influence of redox non-innocent phenylenediamido ligands on chromium imido hydrogen-atom abstraction reactivity

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9958-9960
DOI: 10.1039/C4CC04545A, CommunicationWen Zhou, Brian O. Patrick, Kevin M. Smith
Reaction of new CpCr[(RN)2C6H4] complexes (R = SiMe3, CH2CMe3, Ph) with organic azides generates chromium imido complexes.
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Incorporation of heterostructured Sn/SnO nanoparticles in crumpled nitrogen-doped graphene nanosheets for application as anodes in lithium-ion batteries

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9961-9964
DOI: 10.1039/C4CC04187A, CommunicationFei-Hu Du, Yu-Si Liu, Jie Long, Qian-Cheng Zhu, Kai-Xue Wang, Xiao Wei, Jie-Sheng Chen
Sn/SnO nanoparticles are incorporated in crumpled nitrogen-doped graphene nanosheets by a simple melting diffusion method, generating a composite exhibiting excellent electrochemical performance.
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Fluorescent polymeric aggregates for selective response to Sarin surrogates

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9965-9968
DOI: 10.1039/C4CC03580A, CommunicationAnca D. Rusu, Ioana A . Moleavin, Nicolae Hurduc, Matthieu Hamel, Licinio Rocha
Fluorescent polymeric chemical sensors with double signal generation in aqueous solutions for Sarin detection.
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Synthesis and kinetic resolution of N-Boc-2-arylpiperidines

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9910-9913
DOI: 10.1039/C4CC04576A, CommunicationEdward J. Cochrane, Daniele Leonori, Lorraine A. Hassall, Iain Coldham
An efficient kinetic resolution of 2-arylpiperidines was developed using a chiral base.
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Simultaneous SERS detection and imaging of two biomarkers on the cancer cell surface by self-assembly of branched DNA-gold nanoaggregates

3 August, 2014 - 18:17

Chem. Commun., 2014, 50,9907-9909
DOI: 10.1039/C4CC05226A, CommunicationYing Li, Xindi Qi, Chengcun Lei, Qifeng Yue, Shusheng Zhang
A surface-enhanced Raman scattering (SERS) method has been proposed for simultaneous detection and imaging of two biomarkers on the surface of a single human breast cancer cell (MCF-7) by self-assembly of branched DNA-gold nanoaggregates.
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