Chem. Commun.

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Ligand-controlled E/Z selectivity and enantioselectivity in palladium-catalyzed allylation of benzofuranones with 1,2-disubstituted allylic carbonates

6 April, 2014 - 13:17

Chem. Commun., 2014, 50,4554-4557
DOI: 10.1039/C3CC49338E, CommunicationKohsuke Ohmatsu, Mitsunori Ito, Takashi Ooi
The first highly E- and enantioselective allylic alkylation of prochiral carbon nucleophiles with 1,2-disubstituted allylic carbonates is reported. The key is the ability of modular ion-paired chiral ligands to simultaneously control the E/Z selectivity and enantioselectivity.
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Ratiometric luminescence thermometry based on crystal-field alternation at the extremely narrow 5D0 [rightward arrow] 7F2 transition band of europium(III)

4 April, 2014 - 12:54

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC00704B, CommunicationJunpei Yuasa, Ryusuke Mukai, Yasuchika Hasegawa, Tsuyoshi Kawai
[BP-(EuIII)2-(ODA)3] (BP = 2,2[prime or minute]-bipyridine-6,6[prime or minute]-dicarboxylic acid bis(N-hydroxy-succinimide) ester, ODA = diglycolic acid) shows a fully reversible emission spectral change at the extremely narrow 5D0 [rightward arrow] 7F2 transition band in response to temperature changes ranging from 283 K to 333 K.
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Red Si-rhodamine drug conjugates enable imaging in GFP cells

4 April, 2014 - 12:54

Chem. Commun., 2014, 50,4504-4507
DOI: 10.1039/C4CC00144C, CommunicationEunha Kim, Katherine S. Yang, Randy J. Giedt, Ralph Weissleder
Here we evaluated a series of Si-derivatized rhodamine (SiR) dyes for their ability to visualize a model drug in live cells. We show that a charge neutral SiR derivative (but not others) can indeed be used to follow the intracellular location of the model therapeutic drug in GFP cells.
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The highly enhanced performance of lamellar WS2 nanosheet electrodes upon intercalation of single-walled carbon nanotubes for supercapacitors and lithium ions batteries

4 April, 2014 - 12:54

Chem. Commun., 2014, 50,4485-4488
DOI: 10.1039/C4CC01622J, CommunicationYu Liu, Wei Wang, Hubiao Huang, Lin Gu, Yewu Wang, Xinsheng Peng
Highly electrochemical performance of single-walled carbon nanotubes intercalated lamellar WS2 nanosheets electrodes.
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Fast Li-ion conduction in poly(ethylene carbonate)-based electrolytes and composites filled with TiO2 nanoparticles

4 April, 2014 - 12:54

Chem. Commun., 2014, 50,4448-4450
DOI: 10.1039/C3CC49588D, CommunicationYoichi Tominaga, Kenta Yamazaki
We have found remarkable ion-conductive properties in a novel polymer electrolyte composed of poly(ethylene carbonate) and Li bis-(fluorosulfonyl) imide.
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Enhanced efficiency of solution-processed small-molecule solar cells upon incorporation of gold nanospheres and nanorods into organic layers

4 April, 2014 - 12:54

Chem. Commun., 2014, 50,4451-4454
DOI: 10.1039/C4CC01322K, CommunicationXiaoyan Xu, Aung Ko Ko Kyaw, Bo Peng, Qingguo Du, Lei Hong, Hilmi Volkan Demir, Terence K. S. Wong, Qihua Xiong, Xiao Wei Sun
Incorporating different shapes of gold nanoparticles into the buffer layer and the active layer enhanced the performance in solution-processed small-molecule solar cells.
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Electrochemical modulation of SERS at the liquid/liquid interface

4 April, 2014 - 12:54

Chem. Commun., 2014, 50,4482-4484
DOI: 10.1039/C4CC00359D, CommunicationSamuel G. Booth, David P. Cowcher, Royston Goodacre, Robert A. W. Dryfe
The potential applied to an oil-water interface is used to modulate the SERS response in the presence of adsorbed Ag nanoparticles.
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Bioorthogonal site-specific labeling of the 5[prime or minute]-cap structure in eukaryotic mRNAs

4 April, 2014 - 12:54

Chem. Commun., 2014, 50,4478-4481
DOI: 10.1039/C4CC01549E, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Josephin Marie Holstein, Daniela Schulz, Andrea Rentmeister
A chemo-enzymatic approach for site-specific labeling of 5[prime or minute]-capped RNAs based on strain-promoted azide-alkyne cycloaddition (SPAAC) was developed.
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In situ growth of a MoSe2/Mo counter electrode for high efficiency dye-sensitized solar cells

4 April, 2014 - 12:54

Chem. Commun., 2014, 50,4475-4477
DOI: 10.1039/C3CC49600G, CommunicationHaijie Chen, Yian Xie, Houlei Cui, Wei Zhao, Xiaolong Zhu, Yaoming Wang, Xujie Lu, Fuqiang Huang
A facile and economical MoSe2/Mo structure was in situ prepared to replace the currently preferred expensive Pt and FTO counter electrode (CE) in dye-sensitized solar cells.
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High-turnover visible-light photoreduction of CO2 by a Re(I) complex stabilized on dye-sensitized TiO2

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4462-4464
DOI: 10.1039/C3CC49744E, CommunicationEun-Gyeong Ha, Jeong-Ah Chang, Sung-Min Byun, Chyongjin Pac, Dong-Myung Jang, Jeunghee Park, Sang Ook Kang
Higher photocatalytic CO2 conversion to CO with a turnover number of 435 was achieved by the ternary dye-sensitized systems comprising a dye/TiO2/Re platform.
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A structurally-characterized NbCl5-NHC adduct

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4472-4474
DOI: 10.1039/C4CC01575D, CommunicationMarco Bortoluzzi, Eleonora Ferretti, Fabio Marchetti, Guido Pampaloni, Stefano Zacchini
The X-ray structure of 2a is the first one reported for a monodentate NHC-niobium compound and bears the highest oxidation state ever found for a metal centre in a transition metal halide-NHC adduct.
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Crystal-phase control of molybdenum carbide nanobelts for dehydrogenation of benzyl alcohol

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4469-4471
DOI: 10.1039/C4CC00242C, CommunicationZhongcheng Li, Chunhui Chen, Ensheng Zhan, Na Ta, Yong Li, Wenjie Shen
Belt-shaped molybdenum carbides in [small alpha]- and [small beta]-phases were synthesized by reducing and carburizing a nano-sized [small alpha]-MoO3 precursor with hydrocarbon-hydrogen mixtures at appropriate temperatures; the [small beta]-Mo2C nanobelts were more active than the [small alpha]-MoC1-x nanobelts in dehydrogenation of benzyl alcohol to benzaldehyde.
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Branched tetrasilane substituted phosphines - synthesis and characterisation of PhSi(SiiPr2)3P and {PhSi(SiMe2)3}2P14

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4416-4419
DOI: 10.1039/C4CC00165F, CommunicationMichael Feierabend, Carsten von Hanisch
Reactions of branched trichlorotetrasilane with P7(SiMe3)3 and Li3P are described, yielding the new compounds PhSi(SiiPr2)3P and {PhSi(SiMe2)3}2P14.
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Peptoid helicity modulation: precise control of peptoid secondary structures via position-specific placement of chiral monomers

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4465-4468
DOI: 10.1039/C3CC49373C, CommunicationHye-Min Shin, Chang-Muk Kang, Myung-Han Yoon, Jiwon Seo
The effect of position-specific placement of structure-inducing monomer(s) on the peptoid secondary structure was investigated.
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Enantioselective domino reaction of CO2, amines and allyl chlorides under iridium catalysis: formation of allyl carbamates

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4455-4458
DOI: 10.1039/C4CC00413B, CommunicationMin Zhang, Xiaoming Zhao, Shengcai Zheng
The enantioselective domino reaction between CO2 (1 atm), amines and linear allyl chlorides in the presence of an iridium complex, DABCO and toluene at 15 [degree]C was realized, which gave branched allyl carbamates in acceptable to high yields with up to excellent regioselectivity (99/1) and 94% ee.
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Enantio- and chemoselective Bronsted-acid/Mg(nBu)2 catalysed reduction of [small alpha]-keto esters with catecholborane

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4489-4491
DOI: 10.1039/C4CC00427B, CommunicationDieter Enders, Bianca A. Stockel, Andreas Rembiak
The first enantio- and chemoselective Bronsted-acid catalysed reduction of [small alpha]-keto esters with catecholborane has been developed.
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Synthesis of silk-based microcapsules by desolvation and hybridization

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4423-4426
DOI: 10.1039/C3CC49489F, CommunicationBo Du, Jingjie Wang, Zhimin Zhou, Hongbo Tang, Xuemin Li, Yingjie Liu, Qiqing Zhang
Silk-based hybrid capsules for potential diagnostics and drug delivery were synthesized using the desolvation technique followed by capping with gold nanorods.
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Light-induced modification of silver nanoparticles with functional polymers

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4430-4433
DOI: 10.1039/C4CC00960F, CommunicationLukas Stolzer, Ishtiaq Ahmed, Cesar Rodriguez-Emmenegger, Vanessa Trouillet, Pascal Bockstaller, Christopher Barner-Kowollik, Ljiljana Fruk
Light coating: Ag-polymer core-shell nanoparticles were prepared using photoenol-based light-induced ligation.
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Preparation of conjugated 1,3-enynes by Rh(III)-catalysed alkynylation of alkenes via C-H activation

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4459-4461
DOI: 10.1039/C4CC01141D, CommunicationKarl D. Collins, Fabian Lied, Frank Glorius
An experimentally simple additive-free Rh(III)-catalysed direct alkynylation of alkenes has been developed.
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Oxygen and methanol mediated irreversible coordination polymer structural transformation from a 3D Cu(I)-framework to a 1D Cu(II)-chain

2 April, 2014 - 12:17

Chem. Commun., 2014, 50,4434-4437
DOI: 10.1039/C4CC00857J, CommunicationJing-Yuan Ge, Jian-Cheng Wang, Jun-Yan Cheng, Peng Wang, Jian-Ping Ma, Qi-Kui Liu, Yu-Bin Dong
An irreversible structural transformation from a 3D Cu(I)-framework to a 1D Cu(II)-chain mediated by oxygen and methanol visible to the naked-eye is reported.
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