Royal Society of Chemistry

A family of low molecular-weight, organic catalysts for reductive C-C bond formation

Chem. Commun. - 30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13902-13905
DOI: 10.1039/C5CC03580E, CommunicationSaad Shaaban, Anais Jolit, Desislava Petkova, Nuno Maulide
Using only small amounts of a hydrazine catalyst, the coupling of diazonium salts to a variety of reactive partners has been achieved, without the requirement for either metal adjuvants or irradiation with visible or ultraviolet light.
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A [2]rota[2]catenane, constructed from a pillar[5]arene-crown ether fused double-cavity macrocycle: synthesis and structural characterization

Chem. Commun. - 30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13882-13885
DOI: 10.1039/C5CC05623C, CommunicationWei-Bo Hu, Wen-Jing Hu, Xiao-Li Zhao, Yahu A. Liu, Jiu-Sheng Li, Biao Jiang, Ke Wen
A [2]rota[2]catenane, based on a pillar[5]arene-crown ether fused bicycle, was constructed and its structure was determined crystallographically.
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Reactivity of a pyridinium-substituted dimethyldihydropyrene switch under aerobic conditions: self-sensitized photo-oxygenation and thermal release of singlet oxygen

Chem. Commun. - 30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13886-13889
DOI: 10.1039/C5CC04763C, CommunicationSaioa Cobo, Frederic Lafolet, Eric Saint-Aman, Christian Philouze, Christophe Bucher, Serena Silvi, Alberto Credi, Guy Royal
A reversible photo-switch is converted into an endoperoxide when irradiated with red light under air. This photo-produced species thermally releases 1O2.
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Copper-Mediated Stereospecific C-H Oxidative Sulfenylation of Terminal Alkenes with Disulfides

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06250K, CommunicationHai-Yong Tu, Bolun Hu, Chen-Liang Deng, Xing-Guo Zhang
A copper and iodine-mediated C-H oxidative sulfenylation of olefins with diaryl disulfides has been developed for the stereospecific synthesis of vinyl thioether. With the combination of Cu(OTf)2 and I2, a...
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Catalytic Asymmetric Construction of Spiro[pyrrolidine-2,3'-oxindole] Scaffolds through a Chiral Phosphoric Acid-Catalyzed 1,3-Dipolar Cycloaddition Involving 3-Amino Oxindoles

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05798A, CommunicationBaomin Wang, Guodong Zhu, xiaoze bao, Huanrui Zhang, Qian Wei, Jingping Qu
A catalytic asymmetric three-component 1,3-dipolar cycloaddition of 3-amino oxindoles with aldehydes and nitroolefins under the catalysis of a chiral phosphoric acid is reported. The reaction provides a facile approach to...
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Nanostructured High-Performance Dielectric Block Copolymer

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05307B, CommunicationMeiran Xie, Wenmei Liu, Xiaojuan Liao, Qiuhua Zhao, Ruyi Sun, Yawei Li
A new type of insulating-conductive block copolymer was synthesized by metathesis polymerizations, self-assembled into unique nanostructure of micelle or hollow sphere, and exhibited high dielectric constant, low dielectric loss, and...
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Highly Selective Copper-Catalyzed Trifunctionalization of Alkynyl Carboxylic Acids: An Efficient Route to Bis-Deuterated [small beta]-Borylated [small alpha], [small beta]-Styrene

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05084G, CommunicationQiang Feng, Kai Yang, Qiuling Song
Abstract: A copper-catalyzed highly efficient protocol for the synthesis of bis-deuterated [small beta]-borylated [small alpha], [small beta]-styrene derivatives, which can be further transformed to practical isotopically labeled compounds have been developed. Alkynyl carboxylic...
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Synthesis of functionalized tryptamines by Bronsted acid catalysed cascade reactions

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06855J, CommunicationNicola Melis, francesco Secci, Thomas Boddaert, David J Aitken, Angelo Frongia
An original synthetic protocol has been developed for the preparation of highly functionalized tryptamines from 2-hydroxycyclobutanone and secondary arylamines via a solvent-free Bronsted acid catalysed two-step reaction sequence
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Bis-Urea Macrocycles with a Deep Cavity

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06768E, CommunicationGuo-bao Huang, Zhenfeng He, Chen-Xi Cai, Fangfang Pan, Dingqiao Yang, Kari Rissanen, Wei Jiang
Two configurational isomers of bis-urea macrocycles have been synthesized, and their neutral molecule recognition was studied by X-ray crystallography and 1H NMR experiments. Cooperative action between the deep cavity and...
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An Unusual Chemoselective Oxidation Strategy by an Unprecedented Exploration of Electrophilic Center of DMSO: A New Facet to Classical DMSO Oxidation

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05713B, CommunicationRajesh Chebolu, Ashish Bahuguna, Reena Sharma, Vivek Kumar Mishra, Ponneri Chandrababu Ravikumar
A conceptually new dimethyl sulfoxide (DMSO) based oxidation process without the use of any activator has been demonstrated for the oxidation of active methylenes and benzhydrols. The developed protocol involves...
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Magnetic graphitic carbon nitride: application in C-H activation of amines

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05895C, CommunicationSanny Verma, Nasir Baig, Changseok Han, Mallikarjuna N Nadagouda, Rajender S Varma
Magnetic graphitic carbon nitride, Fe@g-C3N4, has been synthesized by adorning graphitic carbon nitride (g-C3N4) support with iron oxide via non-covalent interaction. The magnetically recyclable catalyst showed excellent reactivity for expeditious...
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A biodegradable adamantane polymer with ketal linkages in its backbone for gene therapy

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05242D, CommunicationSantanu Maity, Priya Choudhary, Manu Manjunath, Aditya Kulkarni, Niren Murthy
In this report we present a polyketal, termed pADK, which has adamantane groups embedded in its backbone, and degrades into neutral excretable compounds. pADK was synthesized via click chemistry and...
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Unexpected Functions of Oxygen in Chemical Vapor Deposition Atmosphere to Regulate Graphene Growth Modes

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06073G, CommunicationJing Li, Dong Wang, Li-jun Wan
The triple role of hydrogen as cocatalyst in the formation of active carbon species, etchant in the formation of stable graphene edge and passivator at graphene edge to boost multilayer...
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Solvent-starved conditions in confinement cause chemical oscillations excited by passage of a cathodic delamination front

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06468F, CommunicationDanish Iqbal, Adnan Sarfraz, Martin Stratmann, Andreas Erbe
After passage of a delamination front at a polymer/zinc interface, pH oscillations and oscillations in the quantity of corrosion products are observed. Reason for the oscillation is the low quantity...
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Discovery of neat silica gel as catalyst: an example of S[rightward arrow]O acetyl migration reaction

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05396J, CommunicationYu Jin, Jiachen Li, Li Peng, Chao Gao
Silica gel, widely used in chromatography separation and as catalyst carrier, was employed here for the first time as fixed-bed catalyst for the S[rightward arrow]O acetyl migration to synthesize thiol compounds...
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Reagent for Specific Recognition of Cysteine in Aqueous Buffer and in Natural Milk: Imaging Studies, Enzymatic Reaction and Analysis of Whey Protein.

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC04876A, CommunicationAmitava Das, Anila H. A., Upendar Reddy Gandra, Firoj Ali, Nandaraj Taye, Samit Chattopadhyay
We report a new chemodosimetric probe (L) for specific recognition of cysteine (Cys) in aqueous buffer and in whey protein isolated from fresh cow's milk. Using this reagent we could...
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A New Avenue to the Synthesis of GAG-mimicking Polymers Highly Promoting Neural Differentiation of Embryonic Stem Cells

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06944K, CommunicationMengmeng Wang, Zhonglin Lv, Gaojian Chen, hongwei wang, Yuqi Yuan, Kaiguo Ding, qian yu, Lin Yuan, Hong Chen
A new strategy for the fabrication of glycosaminoglycan (GAG) analogs was proposed by copolymerizing the sulfonated unit and glyco unit, 'splitted' from the sulfated saccharide building block of GAGs. The...
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Dual functionality of phosphonic acid appended phthalocyanines: inhibitors of urokinase plasminogen activator and anticancer photodynamic agents

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06561E, CommunicationVenkatramaiah Nutalapati, Patrica Pereira, Filipe Alexandre Almeida Paz, Carlos Ribeiro, Rosa Fernandes, Joao Tome
Phthalocyanines (Pcs) bearing phosphonic acid groups at the periphery exhibits potential photodynamic efect to induce phototoxicity on human bladder cancer epithelial cells (UM-UC-3). The in vitro photophysical and biological studies...
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Mixed Perovskite Based on Methyl-ammonium and Polymeric-ammonium for Stable and Reproducible Solar Cells

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC05879A, CommunicationKai Yao, Xiaofeng Wang, Fan Li, Lang Zhou
We have described the compositional engineering of mixed perovskite based on methyl- and polymeric-ammonium. The resulting perovskite films containing moisture-resistant 2D materials exhibit a maximum power conversion efficiency over 15%...
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Wavelength-dependent optoacoustic imaging probes for NMDA receptor visualisation

Chem. Commun. - 30 August, 2015 - 19:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC06277B, CommunicationDavid Parker, Anurag Mishra, Robert Pal, Martina Delbianco, Neil Sim, sven gottschalk, Gil Westmeyer, daniel Razansky, vasilis Ntzaichristos, Oleksiy Degtaryuk
We describe the design, synthesis and cellular evaluation of two NMDAR-targeted near-infrared imaging probes. Their cellular localisation profile and specificity of binding was examined by microscopy, followed by exemplification of...
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