Chem. Commun.

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Mechanosynthesis of imine, [small beta]-ketoenamine, and hydrogen-bonded imine-linked covalent organic frameworks using liquid-assisted grinding

14 July, 2014 - 13:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC03389B, CommunicationGobinda Das, Digambar Balaji Shinde, Sharath Kandambeth, Bishnu P. Biswal, Rahul Banerjee
Dynamic covalent bond formation is dramatically accelerated under Liquid-Assisted Grinding (LAG) conditions leading to improved crystalline COFs efficiently at a faster rate and in high yield.
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Efficient synthesis of carbazolespirooxindole skeletons via asymmetric Diels-Alder reaction of 3-vinylindoles and methyleneindolinones

14 July, 2014 - 13:17

Chem. Commun., 2014, 50,8794-8796
DOI: 10.1039/C4CC03135K, CommunicationHaifeng Zheng, Peng He, Yangbin Liu, Yulong Zhang, Xiaohua Liu, Lili Lin, Xiaoming Feng
A mild, highly efficient asymmetric Diels-Alder reaction, catalyzed by chiral N,N[prime or minute]-dioxide-Ni(II) complexes, has been achieved for the synthesis of chiral carbazolespirooxindole derivatives. A wide variety of substrates were readily tolerated, generating exclusively the corresponding exo-products.
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Enantioselective phospha-Michael addition of diarylphosphines to [small beta],[gamma]-unsaturated [small alpha]-ketoesters and amides

14 July, 2014 - 13:17

Chem. Commun., 2014, 50,8768-8770
DOI: 10.1039/C4CC01610F, CommunicationRenta Jonathan Chew, Kai Yuan Teo, Yinhua Huang, Bin-Bin Li, Yongxin Li, Sumod A. Pullarkat, Pak-Hing Leung
A chiral palladacycle catalyzed hydrophosphination of [small beta],[gamma]-unsaturated [small alpha]-ketoesters and amides has been developed; with up to 99% yield and 90% ee.
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Bioactive glass hybrids: a simple route towards the gelatin-SiO2-CaO system

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8701-8704
DOI: 10.1039/C3CC49113G, CommunicationXavier Dieudonne, Valerie Montouillout, Edouard Jallot, Franck Fayon, Jonathan Lao
A schematic view of class II bioactive glass hybrids based on SiO2-CaO-gelatin.
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2D conglomerate crystallization of heptahelicene

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8751-8753
DOI: 10.1039/C4CC03574G, CommunicationJohannes Seibel, Laura Zoppi, Karl-Heinz Ernst
Two-dimensional homochiral nucleation and conglomerate crystallization of an unsubstituted all-carbon helicene on a metal surface is observed for the first time.
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Tip-induced C-H activation and oligomerization of thienoanthracenes

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8791-8793
DOI: 10.1039/C4CC03719G, CommunicationL. E. Dinca, J. M. MacLeod, J. Lipton-Duffin, C. Fu, D. Ma, D. F. Perepichka, F. Rosei
The tip of a scanning tunneling microscope (STM) can be used to dehydrogenate freely-diffusing tetrathienoanthracene (TTA) molecules on Cu(111), trapping the molecules into metal-coordinated oligomeric structures.
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A novel nanogel-based fluorescent probe for ratiometric detection of intracellular pH values

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8787-8790
DOI: 10.1039/C4CC03716B, CommunicationLixia Cao, Xiaoyan Li, Shuangqing Wang, Shayu Li, Yi Li, Guoqiang Yang
A new nanogel indicator (NGI) for ratiometric fluorescent detection of intracellular pH values has been reported. In aqueous solution, the NGI can be used for ratiometric sensing of pH changes with a large hypsochromic shift of 100 nm in the green-red region and reversible. Furthermore, the NGI has been used to calibrate the cytosol pH in living cells.
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High performance gas adsorption and separation of natural gas in two microporous metal-organic frameworks with ternary building units

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8648-8650
DOI: 10.1039/C4CC03729D, CommunicationDongmei Wang, Tingting Zhao, Yu Cao, Shuo Yao, Guanghua Li, Qisheng Huo, Yunling Liu
Two MMOFs were assembled by the ternary SBU strategy and exhibited high adsorption selectivity for CO2, C2H6 and C3H8 over CH4.
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Targeted and image-guided photodynamic cancer therapy based on organic nanoparticles with aggregation-induced emission characteristics

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8757-8760
DOI: 10.1039/C4CC02767A, CommunicationYouyong Yuan, Guangxue Feng, Wei Qin, Ben Zhong Tang, Bin Liu
Organic nanoparticles with aggregation-enhanced photoactivity and aggregation-induced emission (AIE) characteristics are developed for image-guided photodynamic cancer therapy.
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Tertiary amide-based Knoevenagel-type reactions: a direct, general, and chemoselective approach to enaminones

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8761-8763
DOI: 10.1039/C4CC03826F, CommunicationPei-Qiang Huang, Wei Ou, Kai-Jiong Xiao, Ai-E Wang
We report one-pot and chemoselective Knoevenagel-type reactions using highly stable amides and lactams as the electrophilic substrates.
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Aerobic copper-catalyzed oxidative [6C+1C] annulation: an efficient route to seven-membered carbocycles

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8764-8767
DOI: 10.1039/C4CC03095H, CommunicationXiao Liu, Lingjuan Zhang, Xianxiu Xu, Shan Wang, Ling Pan, Qian Zhang, Qun Liu
A copper-catalyzed aerobic tandem Michael addition-intramolecular radical cyclization-benzyl C(sp3)-H bond oxidation reaction of dicinnamoyl ketene dithioacetals and ethyl cyanoacetate was developed for the diastereoselective synthesis of seven-membered carbocycles.
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Molecular brass: Cu4Zn4, a ligand protected superatom cluster

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8681-8684
DOI: 10.1039/C4CC03401E, CommunicationKerstin Freitag, Hung Banh, Christian Gemel, Rudiger W. Seidel, Samia Kahlal, Jean-Yves Saillard, Roland A. Fischer
The first examples of structurally characterized "molecular brass", [(CuCNtBu)4(ZnCp*)4] and [(CuCNtBu)4(ZnCp*)3ZnCp] exhibit the structural motif of a [Cu4Zn4] tetrahedral star, which is inversely found in the [gamma]-brass phase Cu5Zn8.
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Engineering chiral Fe(salen)-based metal-organic frameworks for asymmetric sulfide oxidation

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8775-8778
DOI: 10.1039/C4CC03308F, CommunicationZhiwei Yang, Chengfeng Zhu, Zijian Li, Yan Liu, Guohua Liu, Yong Cui
Two chiral porous Fe(salen)-based metal-organic frameworks are constructed and shown to be efficient heterogeneous catalysts for asymmetric sulfide oxidation.
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Interview with Martina Stenzel

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8626-8627
DOI: 10.1039/C4CC90201G, Profile
Martina Stenzel tells ChemComm about her move from pure to applied polymer chemistry and explains the importance of childlike enthusiasm in a research career.
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Enhanced photocatalytic water oxidation efficiency with Ni(OH)2 catalysts deposited on [small alpha]-Fe2O3via ALD

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8727-8730
DOI: 10.1039/C4CC02598A, CommunicationKelley M. H. Young, Thomas W. Hamann
Photoelectrochemical conditioning of ALD NiO produces a Ni(OH)2 water oxidation catalyst which dramatically improves the performance of iron oxide electrodes.
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Zwitterionic vesicles with AuCl4- counterions as soft templates for the synthesis of gold nanoplates and nanospheres

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8783-8786
DOI: 10.1039/C4CC03626C, CommunicationXinpei Gao, Fei Lu, Bin Dong, Tao Zhou, Wenfei Tian, Liqiang Zheng
Zwitterionic vesicles with AuCl4- counterions were fabricated for the first time as the soft templates for colloidal synthesis of gold nanostructures.
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Synthesis and structure of oxetane containing tripeptide motifs

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8797-8800
DOI: 10.1039/C4CC03507K, CommunicationNicola H. Powell, Guy J. Clarkson, Rebecca Notman, Piotr Raubo, Nathaniel G. Martin, Michael Shipman
A new class of peptidomimetic is made in which the central amide C[double bond, length as m-dash]O bond of a tripeptide is replaced by an oxetane ring. Structural insights are provided by X-ray diffraction and molecular dynamics simulations.
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Challenging conventional f-element separation chemistry - reversing uranyl(VI)/lanthanide(III) solvent extraction selectivity

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8670-8673
DOI: 10.1039/C4CC03031A, CommunicationC. A. Hawkins, C. G. Bustillos, R. Copping, B. L. Scott, I. May, M. Nilsson
A hydrophilic Schiff base complexes well with uranyl(VI), but not europium(III), demonstrating a new approach to their solvent extraction and separation.
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Kagome-like lattice of [small pi]-[small pi] stacked 3-hydroxyphenalenone on Cu(111)

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8659-8662
DOI: 10.1039/C4CC03523B, CommunicationS. Beniwal, S. Chen, D. A. Kunkel, J. Hooper, S. Simpson, E. Zurek, X. C. Zeng, A. Enders
Three-dimensional arrangement of 3-HPLN on a 2D surface, involving [small pi]-[small pi] stacking and perpendicular molecule attachment, results in a Kagome lattice.
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Lipase catalyzed inclusion of gastrodigenin for the evolution of blue light emitting peptide nanofibers

12 July, 2014 - 12:54

Chem. Commun., 2014, 50,8685-8688
DOI: 10.1039/C4CC02484B, CommunicationDnyaneshwar B. Rasale, Indrajit Maity, Apurba K. Das
Lipase catalysed regioselective inclusion of gastrodigenin (p-hydroxy benzyl alcohol) to a peptide Nmoc-Leu-Trp-OH at physiological pH 7.4 leads to the formation of blue light emitting peptide nanofibers.
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