Chem. Commun.

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Asymmetric vinylogous Michael reaction of cyclic enones with silyloxy furans

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13941-13944
DOI: 10.1039/C5CC05617A, CommunicationAmol P. Jadhav, V. U. Bhaskara Rao, Pradeep Singh, R. G. Gonnade, Ravi P. Singh
A chiral, primary diamine catalyzed enantioselective vinylogous Michael reaction of cyclohexenone/medium and large cyclic enones with various 2-silyloxyfuran has been explored.
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How does relativity affect magnetically induced currents?

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13961-13963
DOI: 10.1039/C5CC05732A, CommunicationR. J. F. Berger, M. Repisky, S. Komorovsky
Relativity contributes via induced spin-density to magnetically induced currents (jB) in closed-shell systems and in general enhances curvature in jB.
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Low-valent iron: an Fe(I) ate compound as a building block for a linear trinuclear Fe cluster

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13890-13893
DOI: 10.1039/C5CC04908C, CommunicationC. Lichtenberg, L. Viciu, M. Vogt, R. E. Rodriguez-Lugo, M. Adelhardt, J. Sutter, M. M. Khusniyarov, K. Meyer, B. de Bruin, E. Bill, H. Grutzmacher
A low-valent, linear, trinuclear iron cluster was synthesized from a new Fe(I) ate compound with a redox-active diazadiene-diolefin ligand and fully characterized.
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Resonance-assisted stabilisation of hydrogen bonds probed by NMR spectroscopy and path integral molecular dynamics

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13986-13989
DOI: 10.1039/C5CC05199A, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.M. Dracinsky, L. Cechova, P. Hodgkinson, E. Prochazkova, Z. Janeba
Nuclear quantum effects are shown to be important for resonance stabilisation of intramolecular hydrogen bonds.
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Mismatched changes of the photoluminescence and crystalline structure of a mechanochromic gold(I) isocyanide complex

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13933-13936
DOI: 10.1039/C5CC04609B, CommunicationTomohiro Seki, Kenta Sakurada, Hajime Ito
The mechanochromic compound 1 forms green-emitting crystals (1g) and blue-emitting crystals (1b) that exhibit two intriguing responses to mechanical stimulation.
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C1-Benzyl and benzoyl isoquinoline synthesis through direct oxidative cross-dehydrogenative coupling with methyl arenes

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13953-13956
DOI: 10.1039/C5CC04791A, CommunicationMiao Wan, Hongxiang Lou, Lei Liu
An oxidative cross-dehydrogenative coupling of isoquinolines with methyl arenes has been developed, yielding structurally diverse C1-benzyl and -benzoyl isoquinolines selectively. The direct use of readily available methyl arenes as coupling partners avoids unproductive steps for preactivating functional group installation, and is thereby attractive.
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Ag+-induced reverse vesicle to helical fiber transformation in a self-assembly by adjusting the keto-enol equilibrium of a chiral salicylideneaniline

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13929-13932
DOI: 10.1039/C5CC05367F, CommunicationSougata Datta, Santanu Bhattacharya
A chiral salicylideneaniline shows Ag+-induced reverse vesicle-to-helical nanofiber transformation accompanied by sol-to-gel transition at room temperature.
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Amorphous metal-organic frameworks for drug delivery

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13878-13881
DOI: 10.1039/C5CC05237H, CommunicationClaudia Orellana-Tavra, Emma F. Baxter, Tian Tian, Thomas D. Bennett, Nigel K. H. Slater, Anthony K. Cheetham, David Fairen-Jimenez
We show controlled release over a 30 day period compared with the release from crystalline MOF, which occurs in less than 2 days.
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Efficient photocatalytic water oxidation catalyzed by polyoxometalate [Fe11(H2O)14(OH)2(W3O10)2([small alpha]-SbW9O33)6]27- based on abundant metals

30 August, 2015 - 19:17

Chem. Commun., 2015, 51,13925-13928
DOI: 10.1039/C5CC04551G, CommunicationXiaoqiang Du, Yong Ding, Fangyuan Song, Baochun Ma, Junwei Zhao, Jie Song
We report a novel molecular polyanionic cluster of eleven-FeIII substituted antimoniotungstate Na27[Fe11(H2O)14(OH)2(W3O10)2([small alpha]-SbW9O33)6][middle dot]103H2O (1). Under optimal conditions, a turn-over number (TON) of 1815 +/- 50 and a turn-over frequency (TOFinitial) of 6.3 s-1 over 1 were achieved for water oxidation.
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A family of low molecular-weight, organic catalysts for reductive C-C bond formation

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

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

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

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

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

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

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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Bis-Urea Macrocycles with a Deep Cavity

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

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

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

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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