Chem. Commun.

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Unprecedented directed lateral lithiations of tertiary carbons on NHC platforms

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08434A, CommunicationAndreas Danopoulos, Pierre Braunstein, Elixabete Rezabal, Gilles Frison
Unexpected and unprecedented directed remote lateral lithiation at one CH(CH3)2 of the 3-(2,6-di-isopropylphenyl) wingtip took place upon the reaction of functionalised N-heterocyclic carbene-type molecules with excess of LiCH2SiMe3, leading to...
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Ag(I)-Catalyzed Tandem [6 + 3] Annulation/Isomerization of Isocyanoacetates with Fulvenes: An Expedient Approach to Fused Dihydropyridines

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08382B, CommunicationChun-Jiang Wang, Zhao-Lin He
An unprecedented Ag(I)-catalyzed tandem [6 + 3] cycloaddition/isomerization of isocyanoacetates with fulvenes has been developed, affording the fused dihydropyridine derivatives in good yields with exclusive regioselectivities.
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A mild TCEP-based para-azidobenzyl cleavage strategy to transform reversible cysteine thiol labelling reagents into irreversible conjugates

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08515A, CommunicationAntoine Maruani, Shamim Alom, Pierre Canavelli, Maximilian Lee, Rachel E. Morgan, Vijay Chudasama, S Caddick
It has recently emerged that the succinimide linkage of a maleimide thiol addition product is fragile; being susceptible to hydrolysis and thiol exchange with reactive thiols via a retro-Michael pathway....
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The small molecule probe PT-Yellow labels the renal proximal tubules in zebrafish

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08075K, CommunicationVeronika Sander, Shantanu Patke, Srikanta Sahu, Chai Lean Teoh, Zhenzhen Peng, Young-Tae Chang, Alan J Davidson
We report the development of a small fluorescent molecule, BDNCA3-D2, herein referred to as PT-Yellow. Soaking zebrafish embryos in PT-Yellow or intraperitoneal injection into adults results in non-toxic in vivo...
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Fe3O4 Nanoparticles as Robust Photothermal Agents for Driving High Barrier Reactions under Ambient Conditions

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC07966C, CommunicationRobert J G Johnson, Kaitlin M. Haas, Benjamin Lear
Magnetite nanoparticles (MNPs) show remarkable stability during extreme photothermal heating ([greater-than-or-equal]770K), displaying no change in size, crystallinity, or surfactants. The heat produced is also shown as chemically useful, driving a...
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One-pot cascade synthesis of N-methoxyisoquinolinediones via Rh(III)-catalyzed carbenoid insertion C-H activation/cyclization

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08407A, Communicationjingjing shi, jie zhou, yunnan yan, jinlong jia, xuelei liu, Huacan Song, H.Eric Xu, wei yi
Here a new, mild and versatile method for one-pot cascade synthesis of diversely N-methoxyisoquinolinediones via Rh(III)-catalyzed regioselective carbenoid insertion C-H activation/cyclization of N-methoxybenzamides by [small alpha]-diazotized Meldrum's acid has been achieved....
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Photoinduced Heterodisulfide Metathesis for Reagent-free Synthesis of Polymer Nanoparticles

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08000A, CommunicationLongyu Li, Cunfeng Song, Matthew Jennings, Sankaran Thayumanavan
Reagent-free synthetic methods are of great interest, because of their simplicity and implications in green chemistry. We have taken advantage of photoinduced heterodisulfide metathesis to generate crosslinked polymer nanoparticles. The...
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Facile synthesis of pyrrole-fused dibenzo[a,e]pentalene and application as a new extended, ladder-type fused aromatic system

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC07721K, CommunicationCheng Li, Chunming Liu, Yan Li, Xiaozhang Zhu, Zhaohui Wang
A novel ladder-type pyrrole-fused dibenzo[a,e]pentalene, in which two benzo[a,e]pentalene units are held coplanar by a nitrogen bridge, is synthesized via double intermolecular Pd-catalyzed cascade crossover annulations. The introduction of nitrogen...
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Achieving exceptionally high luminescence quantum efficiency by immobilizing an AIE molecular chromophore into a metal-organic framework

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC07642G, CommunicationZhichao Hu, Guangxi Huang, William P Lustig, Fangming Wang, Hao Wang, Simon Teat, Debasis Banerjee, Deqing Zhang, Jing Li
We design a new yellow phosphor by immobilizing a preselected chromophore into a rigid framework structure using metal nodes. The molecular chromophore exhibits aggregation-induced emission in the near-yellow region. The...
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Carbaborane-Based Alkynylphosphanes and Phospholes

16 November, 2014 - 20:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC08449G, CommunicationEvamarie Hey-Hawkins, Anika Kreienbrink, Menyhart B. Sarosi, Robert Kuhnert, Peter Wonneberger, Anna Arkhypchuk, Sascha Ott, Peter Lonnecke
The reaction of 1,2-bis(N,N-dimethylaminochloro-phosphanyl)-1,2-dicarba-closo-dodecaborane(12) and lithiated phenylacetylene gives a five-membered dihydrophosphole derivative with an exocyclic phosphanyl group. This unexpected reaction opens new possibilities for the synthesis of carbaborane-containing phosphorus heterocycles....
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Synthesis of unsymmetrical N-carboranyl NHCs: directing effect of the carborane anion

16 November, 2014 - 20:17

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC08267B, CommunicationMatthew J. Asay, Steven P. Fisher, Sarah E. Lee, Fook S. Tham, Dan Borchardt, Vincent Lavallo
The selective synthesis of unsymmetrically substituted anionic C-2 and dianionic C-2/C-5 N-carboranyl NHCs is reported, revealing a directing effect conveyed by the anionic carborane substituent.
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Synthesis of imidazo[1,2-a]pyridines: a decade update

16 November, 2014 - 20:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC08495K, Feature ArticleAvik Kumar Bagdi, Sougata Santra, Kamarul Monir, Alakananda Hajra
Here we describe the various strategies for the synthesis of imidazo[1,2-a]pyridines.
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Synthesis of vinyl germylenes

16 November, 2014 - 20:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC07675C, CommunicationMalgorzata Walewska, Judith Baumgartner, Christoph Marschner
Reaction of a disilylated germylene phosphane adduct with phenylacetylene unexpectedly occurs stereo- and regioselectively as insertion into the Si-Ge bond.
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Reversible biomechano-responsive surface based on green fluorescent protein genetically modified with unnatural amino acids

16 November, 2014 - 20:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC07486F, CommunicationJohan Longo, Chunyan Yao, Cesar Rios, Nguyet Trang Thanh Chau, Fouzia Boulmedais, Joseph Hemmerle, Philippe Lavalle, Stefan M. Schiller, Pierre Schaaf, Loic Jierry
Uniaxial stretching of modified GFP "clicked" onto an elastomer leads to a repeatable and reversible decrease of its fluorescence intensity.
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Efficient oxygen reduction by nanocomposites of heterometallic carbide and nitrogen-enriched carbon derived from the cobalt-encapsulated indium-MOF

16 November, 2014 - 20:17

Chem. Commun., 2014, 50,15619-15622
DOI: 10.1039/C4CC06867J, CommunicationAiguo Kong, Qipu Lin, Chengyu Mao, Xianhui Bu, Pingyun Feng
One-step thermal conversion of the Co-In-MOF was developed to obtain efficient heterometallic carbide(Co3InC0.75)/carbon electrocatalysts for oxygen reduction.
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Fabrication of graphene quantum dot-decorated graphene sheets via chemical surface modification

16 November, 2014 - 20:17

Chem. Commun., 2014, 50,15616-15618
DOI: 10.1039/C4CC06567K, CommunicationJaehoon Ryu, Eunwoo Lee, Seungae Lee, Jyongsik Jang
A novel approach to link graphene quantum dots (GQDs) with graphene was explored via chemical surface modification of graphene using 1,5-diaminonapthalene (DAN) and the GDGS have been demonstrated as photocatalysts having high efficiencies suggesting its potential applications.
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A temporary-bridge strategy for enantioselective organocatalyzed synthesis of aza-seven-membered rings

16 November, 2014 - 20:17

Chem. Commun., 2014, 50,15605-15608
DOI: 10.1039/C4CC07731H, CommunicationSebastien Goudedranche, David Pierrot, Thierry Constantieux, Damien Bonne, Jean Rodriguez
We report the first enantioselective organocatalyzed domino synthesis of azepane scaffolds based on an original annulation between [small alpha]-ketoamides and enals.
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Titania photocatalysis through two-photon band-gap excitation with built-in rhodium redox mediator

16 November, 2014 - 20:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC07049F, CommunicationJoanna Kuncewicz, Bunsho Ohtani
Titania particles modified with an extremely small amount (<0.01 mol%) of a rhodium species exhibited photocatalytic activity for the oxidative decomposition of acetaldehyde in air under visible-light irradiation. The reaction proceeded via a two-photon band-gap excitation mechanism with a built-in Rh(III)-Rh(IV) redox couple.
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Out of the active site binding pocket for carbonic anhydrase inhibitors

16 November, 2014 - 20:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC07320G, CommunicationKatia D'Ambrosio, Simone Carradori, Simona M. Monti, Martina Buonanno, Daniela Secci, Daniela Vullo, Claudiu T. Supuran, Giuseppina De Simone
2-Benzylsulfinylbenzoic acid binds to human carbonic anhydrase II in a mode completely different from any other class of carbonic anhydrase inhibitors investigated so far.
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In situ Raman monitoring of [2+2] cycloaddition of pyridine substituted olefins induced by visible laser

16 November, 2014 - 20:17

Chem. Commun., 2014, 50,15631-15633
DOI: 10.1039/C4CC06808D, CommunicationDengtai Chen, Xijiang Han, Wen Jin, Yunchen Du, Ping Xu
Visible laser induced [2+2] cycloaddition of solid-state pyridine substituted olefins into cyclobutane can be monitored by an in situ Raman technique.
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