Royal Society of Chemistry

Catalytic production of cyclic carbonates mediated by lanthanide phenolates under mild conditions

Chem. Commun. - 16 April, 2014 - 15:54

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC02065K, CommunicationJie Qin, Peng Wang, Qingyan Li, Yong Zhang, Dan Yuan, Yingming Yao
Lanthanide complexes stabilized by a bridged poly(phenolate) ligand are efficient catalysts for the cycloaddition between CO2 and both mono- and disubstituted epoxides to generate organic cyclic carbonates with high activity, high selectivity, and a broad substrate scope under mild conditions.
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Evaluating N-benzylgalactonoamidines as putative transition state analogs for [small beta]-galactoside hydrolysis

Org. and Biomol. Chem. - 15 April, 2014 - 10:54

Org. Biomol. Chem., 2014, 12,2792-2800
DOI: 10.1039/C4OB00153B, PaperQiu-Hua Fan, Susanne Striegler, Rebekah G. Langston, James D. Barnett
The kinetic evaluation of several N-benzylgalactonoamidines identified p-methylbenzylgalactonoamidine as a putative transition state analog for the enzymatic hydrolysis of [small beta]-galactopyranosides by [small beta]-galactosidase (A. oryzae).
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Regioisomeric allene dimer formation by the reaction of tetraarylbutatrienes with tetracyanoethene

Org. and Biomol. Chem. - 15 April, 2014 - 10:54

Org. Biomol. Chem., 2014, 12,2784-2791
DOI: 10.1039/C3OB42574F, PaperShoko Ueta, Kazuo Hida, Masaki Nishiuchi, Yasuhiko Kawamura
Title reactions formed head-to-tail unsymmetrically substituted diarylallene dimers possessing four cyano groups in appreciably high yield at room temperature.
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Total synthesis of monosporascone and dihydromonosporascone

Org. and Biomol. Chem. - 15 April, 2014 - 10:54

Org. Biomol. Chem., 2014, 12,2801-2810
DOI: 10.1039/C4OB00331D, PaperKathryn A. Punch, Matthew J. Piggott
The first synthesis of monosporascone has been achieved in five steps and 57% overall yield.
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Diastereoselective Ireland-Claisen rearrangements of substituted allyl [small beta]-amino esters: applications in the asymmetric synthesis of C(5)-substituted transpentacins

Org. and Biomol. Chem. - 15 April, 2014 - 10:54

Org. Biomol. Chem., 2014, 12,2702-2728
DOI: 10.1039/C4OB00274A, PaperStephen G. Davies, Ai M. Fletcher, James A. Lee, Paul M. Roberts, Myriam Y. Souleymanou, James E. Thomson, Charlotte M. Zammit
The Ireland-Claisen rearrangements of substituted allyl [small beta]-amino esters were evaluated, and subsequently employed in syntheses of C(5)-substituted transpentacins.
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A divergent approach to the synthesis of iGb3 sugar and lipid analogues via a lactosyl 2-azido-sphingosine intermediate

Org. and Biomol. Chem. - 15 April, 2014 - 10:54

Org. Biomol. Chem., 2014, 12,2729-2736
DOI: 10.1039/C4OB00241E, PaperJanice M. H. Cheng, Emma M. Dangerfield, Mattie S. M. Timmer, Bridget L. Stocker
Isoglobotrihexosylceramide (iGb3, 1) is an immunomodulatory glycolipid that binds to CD1d and is presented to the T-cell receptor (TCR) of invariant natural killer T (iNKT) cells.
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Interview with Tomoki Ogoshi

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4774-4775
DOI: 10.1039/C4CC90104E, Profile
The 2013 Cram Lehn Pederson prize winner Tomoki Ogoshi reflects on his research career to date and his secrets to success in scientific publishing.
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Cholanamide components for organic alloys; expanding the scope of nanoporous steroidal ureas

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4803-4805
DOI: 10.1039/C4CC01256A, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Leana Travaglini, Lydia N. Bridgland, Anthony P. Davis
Amide-linked side-chains can substitute for esters in crystalline nanoporous steroidal ureas (NSPUs). This efficient conjugation method increases the versatility of NPSUs, and should aid the inclusion of complex functional units in the crystal channels.
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Hairpin DNA probes based on target-induced in situ generation of luminescent silver nanoclusters

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4849-4852
DOI: 10.1039/C4CC01154F, CommunicationYan Xiao, Zhengjun Wu, Kwok-Yin Wong, Zhihong Liu
A novel hairpin DNA probe was designed and constructed based on target-induced in situ generation of luminescent silver nanoclusters.
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Elucidating proline dynamics in spider dragline silk fibre using 2H-13C HETCOR MAS NMR

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4856-4859
DOI: 10.1039/C4CC00971A, CommunicationXiangyan Shi, Jeffery L. Yarger, Gregory P. Holland
2H-13C HETCOR MAS NMR is performed on 2H/13C/15N-Pro enriched A. aurantia dragline silk. Proline dynamics are extracted from 2H NMR line shapes and T1 in a site-specific manner to elucidate the backbone and side chain molecular dynamics for the MaSp2 GPGXX [small beta]-turn regions for spider dragline silk in the dry and wet, supercontracted states.
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Synthesis of yolk-shell HPW@Hollow silicalite-1 for esterification reaction

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4846-4848
DOI: 10.1039/C4CC00693C, CommunicationChengyi Dai, Anfeng Zhang, Junjie Li, Keke Hou, Min Liu, Chunshan Song, Xinwen Guo
HPW@Hollow S-1, a novel solid catalyst for the synthesis of ethyl acetate, was successfully prepared by the ship-in-bottle approach.
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Self-powered electrochemical memristor based on a biofuel cell - towards memristors integrated with biocomputing systems

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4816-4819
DOI: 10.1039/C4CC01540A, CommunicationKevin MacVittie, Evgeny Katz
The electrochemical memristor based on a pH-switchable polymer-modified electrode integrated with a biofuel cell was designed for interfacing biomolecular information processing and electronic systems.
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A ratiometric fluorescent probe for the detection of hydroxyl radicals in living cells

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4843-4845
DOI: 10.1039/C4CC00975D, CommunicationLuyan Meng, Yongquan Wu, Tao Yi
A naphthalimide-naphthyridine derivative is reported for the selective detection of hydroxyl radicals in both solution and living cells.
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A robust, catalytic metal-organic framework with open 2,2[prime or minute]-bipyridine sites

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4810-4812
DOI: 10.1039/C4CC01607F, CommunicationHonghan Fei, Seth M. Cohen
A highly crystalline Zr(IV)-based metal-organic framework (MOF) containing open 2,2[prime or minute]-bipyridine (bpy) chelating sites has been realized using two synthetic strategies, and readily forms complexes with PdCl2 to produce a MOF that exhibits efficient and recyclable catalysis for the Suzuki-Miyaura cross-coupling reaction.
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Water-soluble porphyrin nanospheres: enhanced photo-physical properties achieved via cyclodextrin driven double self-inclusion

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4853-4855
DOI: 10.1039/C4CC01372G, CommunicationHong Zhang, Boyu Zhang, Mengyuan Zhu, Scott M. Grayson, Russell Schmehl, Janarthanan Jayawickramarajah
Water-soluble porphyrinic nanospheres with enhanced photo-physical properties were constructed by using porphyrin precursors with attenuated stacking capabilities as a result of undergoing intra-molecular host-guest interactions.
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One-pot synthesis of nitrogen and sulfur co-doped graphene as efficient metal-free electrocatalysts for the oxygen reduction reaction

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4839-4842
DOI: 10.1039/C4CC00440J, CommunicationXin Wang, Jie Wang, Deli Wang, Shuo Dou, Zhaoling Ma, Jianghong Wu, Li Tao, Anli Shen, Canbin Ouyang, Qiuhong Liu, Shuangyin Wang
Novel N and S co-doped graphene (NSG) was prepared by annealing GO with thiourea. The NSG electrodes show a direct four-electron reaction pathway, higher onset potential, current density and stability than undoped graphene.
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Effect of surface carbon coating on sintering of silver nanoparticles: in situ TEM observations

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4835-4838
DOI: 10.1039/C4CC01547A, CommunicationM. A. Asoro, D. Kovar, P. J. Ferreira
In this work, in situ transmission electron microscopy heating has been used to investigate the effects of a carbon capping layer on sintering of silver nanoparticles.
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Detection and quantification of the Bcr/Abl chimeric protein on biochips using LDI-TOF MS

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4831-4834
DOI: 10.1039/C4CC01332H, CommunicationSeol-Hye Hong, Jae Il Kim, Hyunook Kang, Soojin Yoon, Dong-Eun Kim, Woong Jung, Woon-Seok Yeo
A strategy for detection and quantification of the Bcr/Abl protein was developed, where a mass signal amplification method and the isotope-labeled internal standard were used.
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The scalable pinacol coupling reaction utilizing the inorganic electride [Ca2N]+[middle dot]e- as an electron donor

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4791-4794
DOI: 10.1039/C4CC00802B, CommunicationYe Ji Kim, Sun Min Kim, Hideo Hosono, Jung Woon Yang, Sung Wng Kim
An inorganic electride [Ca2N]+[middle dot]e- is used as an efficient electron donor for the scalable pinacol coupling reaction with a high yield.
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Filamentous supramolecular peptide-drug conjugates as highly efficient drug delivery vehicles

Chem. Commun. - 14 April, 2014 - 15:17

Chem. Commun., 2014, 50,4827-4830
DOI: 10.1039/C4CC01568A, CommunicationMiao Yang, Dawei Xu, Linhai Jiang, Lin Zhang, Derek Dustin, Reidar Lund, Ling Liu, He Dong
We report here a facile approach to prepare filamentous supramolecular peptide-drug conjugates with precise drug/carrier stoichiometry, nearly 100% loading efficiency and exceptional anti-cancer drug efficacy for chemotherapy.
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