Chem. Commun.

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Reductive P-P Coupling of Primary and Secondary Phosphines mediated by N-Heterocyclic Carbenes

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02517F, CommunicationHeidi Schneider, Schmidt David, Udo Radius
The dehydrogenative coupling of primary and secondary phosphines with the N-heterocyclic carbene iPr2Im (1,3-di-isopropyl-imidazolin-2-ylidene) is reported. Dehydrogenation of R2PH affords diphosphines R2P-PR2. The reaction of iPr2Im with ArPH2 leads to...
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Blue-emitting pyrene-based aggregates

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03616J, CommunicationLuis Sanchez, Jorge Santos Valera, Joaquin Calbo, Rafael Gomez, Enrique Orti
The supramolecular polymerization of pyreneimidazoles 1 and 2, governed by H-bonding and C-H[middle dot][middle dot][middle dot][small pi] interactions, yields aggregates showing the characteristic blueish emission pattern of pyrene-based monomers.
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Total chemical synthesis of monoglycosylated GM2 ganglioside activator using a novel cysteine surrogate

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02967H, CommunicationKohei Sato, Keisuke Kitakaze, Takahiro Nakamura, Naoto Naruse, Keisuke Aihara, Akira Shigenaga, Tsubasa Inokuma, Daisuke Tsuji, Kohji Itoh, Akira Otaka
We describe a novel peptide ligation/desulfurization strategy using [small beta]-mercapto-N-glycosylated asparagine derivative. The newly developed procedure is successfully applied to total chemical synthesis of GM2 ganglioside activator protein bearing a monosaccharide...
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The Opposite Gating Behaviors of Solid-State Nanochannels Modified with Long and Short Polymer Chains

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02774H, CommunicationJuntao Zhang, nannan liu, Benmei Wei, Xiaomei Ou, Xuemei Xu, Xiaoding Lou, fan xia
The influence of long and short polymer chains on the gating properties of nanochannel systems modified with NIPAAm-co-PBA copolymer are explored. We not only discover the negative temperature gating behavior...
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Gold-catalyzed selective oxidation of 4-Oxahepta-1,6-diynes to 2H-pyran-3(6H)-ones and chromen-3(4H)-ones via the [small beta]-gold vinyl cation intermediates

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02952J, CommunicationKegong Ji, Xiang Liu, Bowen Du, Fang Yang, J.-M. Gao
The [small alpha]-oxo gold carbenes generated in situ via gold-catalyzed selective oxidation of 4-oxahepta-1,6-diynes were effectively trapped by internal alkynes, resulting in the formation of 2H-pyran-3(6H)-ones 3 and chromen-3(4H)-ones 4 upon...
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Synergistically enhanced oxygen reduction activity of MnOx-CeO2/ketjenblack composite

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02343B, CommunicationJiajie Chen, Nan Zhou, Hai-Yan Wang, Zhiguang Peng, Huiyong Li, You-Gen Tang, Kun Liu
Here we report a hybrid of MnOx-CeO2/ketjenblack as a novel catalyst for oxygen reduction reaction (ORR) by a facile strategy. This hybrid exhibits a comparable activity and better stability towards...
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Ultrathin carbon layer coated MoO2 nanoparticles for high-performance near-infrared photothermal cancer therapy

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02016F, CommunicationQin Liu, Chunyang Sun, Qun He, Daobin Liu, Adnan Khalil, Ting Xiang, Ziyu Wu, Jun Wang, Li Song
Carbon layer-coated molybdenum dioxide nanoparticles exhibit strong photo-absorption in the near infrared (NIR) region and pose good photostability. The in vitro and in vivo experiments reveal that an excellent photothermal...
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Recent development of biotin conjugation in biological imaging, sensing, and target delivery

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03075G, Feature ArticleWenXiu Ren, Jiyou Han, Soojin Uhm, Yu Jin Jang, Chulhun Kang, Jong-Hoon Kim, Jong Seung Kim
Despite encouraging results from preliminary studies of anticancer therapies, the lack of tumor specificity remains an important issue in the modern pharmaceutical industry. New findings indicate that biotin or biotin-conjugates...
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Neutral amine based alcohol-soluble interface materials for inverted polymer solar cells: realizing high performance and overcoming solvent erosion

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02630J, CommunicationJunfeng Fang, Qu Zhang, Dawei Zhang, xiaodong li, Xiaohui Liu, wenjun zhang, Lei Han
Three amino-functionalized fluorene oligomers with different solubility were developed as cathode interfacial materials for inverted polymer solar cells (I-PSCs). By side chain design, we solved the interface layer erosion problem...
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Using RecA protein to enhance kinetic rates of DNA circuits

13 May, 2015 - 16:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C5CC02261D, CommunicationJ. N. Milligan, A. D. Ellington
RecA, a recombination enzyme that catalyzes sequence specific strand exchange, increases the rate of DNA circuitry up to 9-fold.
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Cobalt(II)/silver relay catalytic isocyanide insertion/cycloaddition cascades: a new access to pyrrolo[2,3-b]indoles

13 May, 2015 - 16:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C5CC02754C, CommunicationQian Gao, Peng Zhou, Feng Liu, Wen-Juan Hao, Changsheng Yao, Bo Jiang, Shu-Jiang Tu
The combination of Co(acac)2 and AgOTf enables the bimetallic relay catalysis reaction of 2-ethynylanilines and isocyanides, allowing an easy and low-cost access to new densely functionalized pyrrolo[2,3-b]indoles.
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A Detachable Ester Bond enables the Perfect Z-Alkylations of Olefins for the Synthesis of Tri- and Tetrasubstituted Alkenes

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03474D, CommunicationTakashi Nishikata, Kimiaki Nakamura, Yuki Inoue, Shingo Ishikawa
The reaction of 2-vinyl-substituted phenol with an alpha-bromoester undergoes the tandem esterification-alkylation reaction in the presence of a Cu-amine catalyst system to produce benzene-fused lactone. Z-Alkylated styrene is obtained after...
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CO2-Promoted Oxidative Cross-Coupling Reaction for C-S Bond Formation via Masked Strategy in an Odourless Way

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03038B, CommunicationZongjun Qiao, Nanyang Ge, Xuefeng Jiang
Cu-catalyzed direct oxidative cross-coupling between boronic acids and masked sulfides delivering thioethers was described, in which the SO3-, as a mask, has shown a distinctive effect on oxidative cross-coupling condition....
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Axis-dependent Magnetic Behavior of C60 and C6010+. Consequences of Spherical Aromatic Character.

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03352G, CommunicationAlvaro Munoz-Castro
The magnetic response of C60 has been studied and compared to its aromatic spherical aromatic counterpart C6010+, focusing into the overall and local shielding tensors. A high axis dependence behavior...
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Electrochromic Polyoxometalate Material as sensor of Bacterial Activity

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03301B, CommunicationAna Gonzalez, NATIVIDAD GALVEZ, Miguel Clemente Leon, Jose M Dominguez-Vera
L. fermentum, a bacterium of human microbiota, acts as an electron donor to the electrochromic [P2MoVI18O62]6. Since, the reductive capacity of L. fermentum correlates with its metabolic activity, the reaction...
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Reversible two-photon fluorescent probe for imaging of hypochlorous acid in live cells and in vivo

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02537K, CommunicationWei Zhang, Wei Liu, Ping Li, Junqing Kang, Jiaoyang Wang, Hui Wang, Bo Tang
The excessive generation of the HOCl is associated with cellular damage and diseases, monitoring the HOCl levels in cells and in vivo is thus of great significance. Here we have...
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A New Redox Strategy for Low-Temperature Formation of Strong Basicity on Mesoporous Silica

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02502H, CommunicationLi Zhu, Feng Lu, Xiao-Dan Liu, Xiao-Qin Liu, Lin-Bing Sun
A redox strategy was designed to generate strong basicity on mesoporous silica by using the redox interaction of precursor with methanol vapor. The formation of strongly basic sites was realized...
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Regioselectivity switch in chiral amine-catalysed asymmetric addition of aldehydes to reactive enals

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC02438B, CommunicationTaichi Kano, Hiroki Maruyama, Ryu Sakamoto, Keiji Maruoka
In this paper, we present a regioselectivity switch for the chiral amine-catalysed asymmetric addition of aldehydes to reactive enals to afford either aldol adducts or conjugate adducts in a stereoselective...
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An Emissive and pH Switchable Hydrazone-Based Hydrogel

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03007B, CommunicationHai Qian, Ivan Aprahamian
A serendipitous discovery has led to a new hydrazone-based low molecular weight fluorescent super-hydrogelator. The gelation and emission properties can be switched "ON" and "OFF" using pH, opening the way...
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A [small pi]-electronic covalent organic framework catalyst: [small pi]-walls as catalytic beds for Diels-Alder reactions under ambient conditions

13 May, 2015 - 16:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC03457D, CommunicationYang Wu, Hong Xu, Xiong Chen, Jia Gao, Donglin Jiang
We report a strategy for developing [small pi]-electronic covalent organic frameworks as heterogeneous catalysts that enable the use of columnar [small pi]-walls as catalytic beds to facilitate organic transformations in their one-dimensional...
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