Chem. Commun.

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AgNO2-mediated direct nitration of the quinoxaline tertiary benzylic C-H bond and direct conversion of 2-methyl quinoxalines into related nitriles

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10857-10860
DOI: 10.1039/C4CC01327A, CommunicationDegui Wu, Jian Zhang, Jianhai Cui, Wei Zhang, Yunkui Liu
A unique method for AgNO2-mediated direct nitration of the quinoxaline tertiary C-H bond and direct conversion of 2-methyl quinoxalines into 2-quinoxaline nitriles under oxidative conditions has been developed.
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An umpolung approach toward N-aryl nitrone construction: a phosphine-mediated addition of 1,2-dicarbonyls to nitroso electrophiles

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10853-10856
DOI: 10.1039/C4CC05044D, CommunicationAditi P. Chavannavar, Allen G. Oliver, Brandon L. Ashfeld
An umpolung strategy toward the chemoselective construction of N-aryl nitrones employing a phosphine-mediated addition of 1,2-dicarbonyls to nitroso arenes is described.
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Enantioselective adsorption of ibuprofen and lysine in metal-organic frameworks

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10849-10852
DOI: 10.1039/C4CC03745F, CommunicationRocio Bueno-Perez, Ana Martin-Calvo, Paula Gomez-Alvarez, Juan J. Gutierrez-Sevillano, Patrick J. Merkling, Thijs J. H. Vlugt, Titus S. van Erp, David Dubbeldam, Sofia Calero
Chiral and non-chiral MOFs have been used to separate racemic and scalemic mixtures of R/S-ibuprofen and L/D-lysine. The computational study reveals the relevance of confinement and guest-guest interactions.
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Concentration and acid-base controllable fluorescence of a metallosupramolecular polymer

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10841-10844
DOI: 10.1039/C4CC04243C, CommunicationLipeng He, Jianjun Liang, Yong Cong, Xin Chen, Weifeng Bu
A metallosupramolecular polymer constructed by coordinating Zn2+ with a conjugated bis-terpyridine ligand with two dibenzo-24-crown-8 groups demonstrates concentration-dependent and acid-base controllable emissions.
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Two-dimensional optical waveguiding and luminescence vapochromic properties of 8-hydroxyquinoline zinc (Znq2) hexagonal microsheets

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10812-10814
DOI: 10.1039/C4CC04794J, CommunicationYan-Qiu Sun, Yi-Long Lei, Jing Gao, Xu-Hui Sun, Sheng-Huang Lin, Qiao-Liang Bao, Qing Liao, Shuit-Tong Lee, Liang-Sheng Liao
Hexagonal single crystalline Znq2 microsheets exhibit two-dimensional optical waveguiding and luminescence vapochromic properties.
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Facile construction of functionalized periodic mesoporous organosilica for Ir-catalyzed enantioselective reduction of [small alpha]-cyanoacetophenones and [small alpha]-nitroacetophenones

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10891-10893
DOI: 10.1039/C4CC04169K, CommunicationChen Chen, Lingyu Kong, Tanyu Cheng, Ronghua Jin, Guohua Liu
A facile construction of organoiridium-functionalized periodic mesoporous organosilica and its application in the enantioselective reduction of [small alpha]-cyano and [small alpha]-nitroacetophenones are studied.
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Synthesis of 2,4,5-trisubstituted oxazoles through tin(IV) chloride-mediated reaction of trans-2-aryl-3-nitro-cyclopropane-1,1-dicarboxylates with nitriles

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10845-10848
DOI: 10.1039/C4CC04764H, CommunicationThangavel Selvi, Kannupal Srinivasan
A new method for synthesis of 2,4,5-trisubstituted oxazoles from trans-2-aryl-3-nitro-cyclopropane-1,1-dicarboxylates and nitriles is described.
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Chemodosimetric cyanide sensing in a 5,15-porphodimethene Pd(II) complex

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10834-10836
DOI: 10.1039/C4CC04775C, CommunicationM. G. Derry Holaday, Gourav Tarafdar, B. Adinarayana, M. L. P. Reddy, A. Srinivasan
The calixphyrin derivative, 5,15-porphodimethene Pd(II) complex, has been demonstrated as a chemodosimetric cyanide sensor.
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Facile synthesis of ultra-small rhenium nanoparticles

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10809-10811
DOI: 10.1039/C4CC04816D, CommunicationTugce Ayval[i without dot], Pierre Lecante, Pier-Francesco Fazzini, Angelique Gillet, Karine Philippot, Bruno Chaudret
Ultra-small monodisperse rhenium nanoparticles are conveniently prepared from the organometallic precursor [Re2(C3H5)4] using hexadecylamine or polyvinylpyrrolidone as a stabilizer.
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Superhydrophobic mesoporous silica nanospheres achieved via a high level of organo-functionalization

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10830-10833
DOI: 10.1039/C4CC03975K, CommunicationJuan Peng, Yi Yao, Xiaoming Zhang, Can Li, Qihua Yang
Superhydrophobic mesoporous silica nanospheres achieved via one-pot condensation of TEOS and chlorosilanes through a prehydrolysis method.
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Poly(N-cyanoethylethyleneimine): a new nanoscale template for biomimetic silicification

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10793-10796
DOI: 10.1039/C4CC02285H, CommunicationDaisuke Noda, Yoshiaki Arai, Daiki Souma, Hideo Nagashima, Ren-Hua Jin
Nanocrystalline entities of poly(N-cyanoethylethyleneimine) (PCEI) could serve as catalytic templates affording nanosheet-based structured silica under mild conditions.
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A Mn(III)/TEMPO-co-mediated tandem azidation-1,2-carbon migration reaction of allylic silyl ethers

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10805-10808
DOI: 10.1039/C4CC04707A, CommunicationZhi-Min Chen, Zhen Zhang, Yong-Qiang Tu, Ming-Hui Xu, Fu-Min Zhang, Chen-Chen Li, Shao-Hua Wang
A novel Mn(III)/TEMPO-mediated azidation-1,2-migration reaction was explored.
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A novel single-side azobenzene-grafted Anderson-type polyoxometalate for recognition-induced chiral migration

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10823-10826
DOI: 10.1039/C4CC04442H, CommunicationBin Zhang, Liang Yue, Yang Wang, Yang Yang, Lixin Wu
The novel umbrella-like azobenzene-grafted Anderson-type POM is synthesized as a bridge to achieve recognition-induced chiral migration through both host-guest and electrostatic interactions.
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A role of disordered domains in regulating protein oligomerization and stability

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10797-10800
DOI: 10.1039/C4CC03863K, CommunicationOfrah Faust, Lavi Bigman, Assaf Friedler
This work describes a new role of intrinsically disordered regions in regulating the oligomeric state and thermodynamic stability of proteins.
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Direct enantioselective vinylogous aldol-cyclization cascade reaction of allyl pyrazoleamides with isatins: asymmetric construction of spirocyclic oxindole-dihydropyranones

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10790-10792
DOI: 10.1039/C4CC04235B, CommunicationTian-Ze Li, Yu Jiang, Yu-Qing Guan, Feng Sha, Xin-Yan Wu
The first enantioselective vinylogous aldol-cyclization cascade reaction of allyl pyrazoleamides with isatins has been developed.
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Quaternized carbon dot-modified graphene oxide for selective cell labelling - controlled nucleus and cytoplasm imaging

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10782-10785
DOI: 10.1039/C4CC02637C, CommunicationK. K. R. Datta, O. Kozak, V. Ranc, M. Havrdova, A. B. Bourlinos, K. Safarova, K. Hola, K. Tomankova, G. Zoppellaro, M. Otyepka, R. Zboril
Cationic quaternized carbon dots (QCDs) and anionic graphene oxide sheets (GO) are combined via non-covalent interactions following a self-assembly pathway to form highly biocompatible and fluorescent hybrid materials.
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Low energy structural dynamics and constrained libration of Li(NH3)4, the lowest melting point metal

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10778-10781
DOI: 10.1039/C4CC03397C, CommunicationA. G. Seel, E. Zurek, A. J. Ramirez-Cuesta, K. R. Ryan, M. T. J. Lodge, P. P. Edwards
The structural dynamics of Li(NH3)4, the lowest melting point metal, are reported in the range of phonon and low-energy internal distortions. Hindrance of NH3 libration in the solid are characterised via inelastic neutron scattering and computational modeling.
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Mechanically resolving noncovalent bonds using acoustic radiation force

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10786-10789
DOI: 10.1039/C4CC03305A, CommunicationLashan De Silva, Li Yao, Shoujun Xu
Acoustic radiation force can precisely resolve noncovalent molecular bindings based on force-induced remnant magnetization spectroscopy.
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Two-dimensional layered composite photocatalysts

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10768-10777
DOI: 10.1039/C4CC02553A, Feature ArticleJingxiang Low, Shaowen Cao, Jiaguo Yu, Swelm Wageh
This feature article summarizes recent developments of 2D layered composite photocatalysts in photocatalytic hydrogen production, bacterial disinfection and pollutant degradation.
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Coupled chemical oscillators and emergent system properties

19 August, 2014 - 21:17

Chem. Commun., 2014, 50,10758-10767
DOI: 10.1039/C4CC00290C, Feature ArticleIrving R. Epstein
We review recent work on a variety of systems, from the nanometre to the centimetre scale, including microemulsions, microfluidic droplet arrays, gels and flow reactors, in which chemical oscillators interact to generate novel spatiotemporal patterns and/or mechanical motion.
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