Chem. Commun.

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Aminosulfonylation of aromatic amines, sulfur dioxide and hydrazines

16 July, 2014 - 13:54

Chem. Commun., 2014, 50,8886-8888
DOI: 10.1039/C4CC03032J, CommunicationDanqing Zheng, Ying Li, Yuanyuan An, Jie Wu
A facile route to aryl N-aminosulfonamides under mild conditions is provided. The reaction of aromatic amines (including heteroaromatic amines), sulfur dioxide, and hydrazines proceeds efficiently with good functional group tolerance. The in situ generated diazonium ion is involved in the aminosulfonylation process.
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A fluorescent metal-organic framework for highly selective detection of nitro explosives in the aqueous phase

16 July, 2014 - 13:54

Chem. Commun., 2014, 50,8915-8918
DOI: 10.1039/C4CC03053B, CommunicationSanjog S. Nagarkar, Aamod V. Desai, Sujit K. Ghosh
Aqueous phase selective and sensitive nitro explosive detection by a porous luminescent metal-organic framework.
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Template-free synthesis of beta zeolite membranes on porous [small alpha]-Al2O3 supports

16 July, 2014 - 13:54

Chem. Commun., 2014, 50,8834-8837
DOI: 10.1039/C4CC02101K, CommunicationYanting Tang, Xiufeng Liu, Shifeng Nai, Baoquan Zhang
The preferentially (h0l)-oriented beta zeolite membrane was prepared on the porous [small alpha]-Al2O3 support by secondary growth of a beta seed layer in the absence of organic templates.
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Multidimensional gas chromatography beyond simple volatiles separation

16 July, 2014 - 13:54

Chem. Commun., 2014, 50,8819-8833
DOI: 10.1039/C4CC02018A, Feature ArticleSung-Tong Chin, Philip J. Marriott
Comprehensive two-dimensional gas chromatography challenges the understanding of the composition of complex samples.
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Enhancing the effective energy barrier of a Dy(III) SMM using a bridged diamagnetic Zn(II) ion

16 July, 2014 - 13:54

Chem. Commun., 2014, 50,8838-8841
DOI: 10.1039/C4CC02094D, CommunicationApoorva Upadhyay, Saurabh Kumar Singh, Chinmoy Das, Ranajit Mondol, Stuart K. Langley, Keith S. Murray, Gopalan Rajaraman, Maheswaran Shanmugam
In this communication, we have proposed a novel synthetic strategy to increase the effective energy barrier (Ueff) of dysprosium(III) single ion magnets using a diamagnetic metal ion such as Zinc(II).
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Solution-grown single-crystalline microwires of a molecular semiconductor with improved charge transport properties

16 July, 2014 - 13:54

Chem. Commun., 2014, 50,8845-8848
DOI: 10.1039/C4CC02055C, CommunicationAkshaya K. Palai, Jihee Lee, Tae Joo Shin, Amit Kumar, Seung-Un Park, Seungmoon Pyo
Preparation and structural analysis of highly ordered single crystalline wires of a diketopyrrolopyrrole (DPP) molecular semiconductor grown through a solution process are reported, and the static/dynamic electrical response of an organic electronic device using the DPP semiconductor has been analyzed.
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Programmed stereoselective assembly of DNA-binding helical metallopeptides

14 July, 2014 - 13:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC03606A, CommunicationIlaria Gamba, Gustavo Rama, Elizabeth Ortega-Carrasco, Jean-Didier Marechal, Jose Martinez-Costas, M. Eugenio Vazquez, Miguel Vazquez Lopez
We have applied solid phase peptide synthesis methods for the construction of peptide ligands that coordinate Fe(II) ions and fold into chiral peptide helicates that show great affinity and chiral selectivity for three-way DNA junctions and promising cell-internalization properties.
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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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