Chem. Commun.

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Copper-catalyzed sequential N-arylation of C-amino-NH-azoles

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12911-12914
DOI: 10.1039/C4CC05628K, CommunicationD. Nageswar Rao, Sk. Rasheed, Ram A. Vishwakarma, Parthasarathi Das
Copper(II)-catalyzed boronic acid promoted C-N bond cross-coupling reactions have been developed for sequential N-arylation of C-amino-NH-azoles.
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Ultrasound-induced transformation of fluorescent organic nanoparticles from a molecular rotor into rhomboidal nanocrystals with enhanced emission

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12955-12958
DOI: 10.1039/C4CC05531D, CommunicationMatthias Koenig, Tomas Torres, Vincenzo Barone, Giuseppe Brancato, Dirk M. Guldi, Giovanni Bottari
The unprecedented ultrasound-induced transformation of fluorescent organic nanoparticles based on a molecular rotor into rhomboidal nanocrystals with enhanced stability and increased emission is presented.
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Amine-borane assisted synthesis of wavy palladium nanorods on graphene as efficient catalysts for formic acid oxidation

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12843-12846
DOI: 10.1039/C4CC05019C, CommunicationCheng Du, Yuxiang Liao, Xing Hua, Wei Luo, Shengli Chen, Gongzhen Cheng
Palladium nanocrystals with different morphologies from nanoparticles and nanorods were obtained by controlled synthesis by using amine-borane complexes as reducing agents without involvement of any templates at relatively low temperature.
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Selective difluoroalkylation of alkenes by using visible light photoredox catalysis

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12884-12887
DOI: 10.1039/C4CC05467A, CommunicationChunghyeon Yu, Naeem Iqbal, Sehyun Park, Eun Jin Cho
A variety of alkenes have been selectively transformed into important fluoroalkyl motifs, difluoroalkylated alkanes and alkenes by visible light photocatalysis.
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Sb nanoparticles decorated N-rich carbon nanosheets as anode materials for sodium ion batteries with superior rate capability and long cycling stability

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12888-12891
DOI: 10.1039/C4CC05989A, CommunicationXianlong Zhou, Yiren Zhong, Mei Yang, Meng Hu, Jinping Wei, Zhen Zhou
The composite of Sb nanoparticles decorated N-rich carbon nanosheets exhibited superior rate capability and cycling stability as a Na-ion battery anode.
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Time-resolved probes and oxidase-based biosensors using terbium(III)-guanosine monophosphate-mercury(II) coordination polymer nanoparticles

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12855-12858
DOI: 10.1039/C4CC05889E, CommunicationMin Zhang, Zhi-bei Qu, Chun-Min Han, Ling-Fei Lu, Yan-Yun Li, Tianshu Zhou, Guoyue Shi
A novel lanthanide coordination polymer nanoparticle-based ternary complex was prepared for the development of time-resolved luminescence assays and oxidase-based biosensors.
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Recovery and redispersion of gold nanoparticles using the self-assembly of a pH sensitive zwitterionic amphiphile

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12933-12936
DOI: 10.1039/C4CC04935G, CommunicationClara Morita-Imura, Yoshiro Imura, Takeshi Kawai, Hitoshi Shindo
The pH-responsive self-assembly of a zwitterionic amphiphile was expanded to the recovery of gold (Au) nanoparticles. Multilayered lamellae were incorporated into the nanoparticles. Redispersion of nanoparticles was achieved by the transition of self-assembly based on pH.
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Resistivity peaks and magnetic properties of an annealed graphene

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12930-12932
DOI: 10.1039/C4CC05703A, CommunicationChang-Soo Park, Yu Zhao, Heetae Kim, Yoon Shon, Eun Kyu Kim
We report on the transport and magnetic properties of graphene annealed at 800 [degree]C under an Ar atmosphere.
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Potassium-alkyl magnesiates: synthesis, structures and Mg-H exchange applications of aromatic and heterocyclic substrates

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12859-12862
DOI: 10.1039/C4CC05305B, CommunicationSharon E. Baillie, Tobias D. Bluemke, William Clegg, Alan R. Kennedy, Jan Klett, Luca Russo, Marco de Tullio, Eva Hevia
Using dipotassium-tetra(alkyl)magnesiates, a new straightforward protocol to promote regioselective Mg-H exchange reactions of a wide variety of aromatic and heteroaromatic substrates is disclosed.
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Ru-assisted synthesis of {111}-faceted Pd truncated bipyramids: a highly reactive, stable and restorable catalyst for formic acid oxidation

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12970-12972
DOI: 10.1039/C4CC05855K, CommunicationDongshuang Wu, Minna Cao, Rong Cao
Single-twinned {111}-bipyramidal Pd NPs are presented for the first time. They are highly active and restorable for formic acid oxidation.
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Introducing deep eutectic solvents as biorenewable media for Au(I)-catalysed cycloisomerisation of [gamma]-alkynoic acids: an unprecedented catalytic system

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12927-12929
DOI: 10.1039/C4CC05904B, CommunicationMaria J. Rodriguez-Alvarez, Cristian Vidal, Josefina Diez, Joaquin Garcia-Alvarez
Cycloisomerisation reactions of [gamma]-alkynoic acids can be conveniently performed in the eutectic mixture 1ChCl/2Urea at room temperature, under air and in the absence of co-catalysts by using a novel iminophosphorane-Au(I) complex.
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The dual binding site of angiogenin and its inhibition mechanism: the crystal structure of the rat angiogenin-heparin complex

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12966-12969
DOI: 10.1039/C4CC05175K, CommunicationKwon Joo Yeo, Eunha Hwang, Kyong-Mi Min, Jun-Goo Jee, Chung-Kyung Lee, Kwang Yeon Hwang, Young Ho Jeon, Soo-Ik Chang, Hae-Kap Cheong
A negative heparin strand is well fitted into the positive groove formed by the dual heparin-binding site of angiogenin.
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Amorphous silicon honeycombs as a binder/carbon-free, thin-film Li-ion battery anode

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12959-12962
DOI: 10.1039/C4CC05303F, CommunicationYu Zhao, Lele Peng, Yu Ding, Guihua Yu
Amorphous silicon with highly ordered two dimensional honeycomb structures shows good electrochemical performance as a thin film Li-ion battery anode.
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On the chemistry of activation of a commercial carbon-supported PtRu electrocatalyst for the methanol oxidation reaction

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12963-12965
DOI: 10.1039/C4CC06098A, CommunicationD.-J. Chen, S.-G. Sun, Y. Y. J. Tong
The best activation of a PtRu/C electrocatalyst is to achieve a partition of segregated Pt and Ru ensembles that maximizes Pt-Ru boundaries.
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Efficient imidation of C(sp3)-H bonds adjacent to oxygen atoms of aryl ethers under metal-free conditions

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12880-12883
DOI: 10.1039/C4CC06003B, CommunicationKai Sun, Xin Wang, Gang Li, Zhonghong Zhu, Yongqing Jiang, Beibei Xiao
A metal-free intermolecular oxidative C-N formation reaction of aryl ethers with saccharins was realized for the first time.
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An AIE-active boron-difluoride complex: multi-stimuli-responsive fluorescence and application in data security protection

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12951-12954
DOI: 10.1039/C4CC05913A, CommunicationXiaolin Zhu, Rui Liu, Yuhao Li, Hai Huang, Qiang Wang, Danfeng Wang, Xuan Zhu, Shishen Liu, Hongjun Zhu
An AIE-active boron-difluoride complex (PTZ) with multi-stimuli-responsive fluorescence, which can be applied for data security protection.
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Highly efficient and robust molecular water oxidation catalysts based on ruthenium complexes

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12947-12950
DOI: 10.1039/C4CC05069J, CommunicationLei Wang, Lele Duan, Ying Wang, Marten S. G. Ahlquist, Licheng Sun
The molecular catalyst Ru(bda)L2 (H2bda = 2,2[prime or minute]-bipyridine-6,6[prime or minute]-dicarboxylic acid, L = 6-bromophthalazine) shows excellent catalytic activity for water oxidation. By using Ce(NH4)2(NO3)6 as an oxidant, the catalyst reached a high turnover number TON = 100 000 in 3 hours.
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Copper-catalyzed endo-type trifluoromethylarylation of alkynes

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12915-12918
DOI: 10.1039/C4CC05692B, CommunicationJun Xu, Yun-Long Wang, Tian-Jun Gong, Bin Xiao, Yao Fu
A novel copper-catalyzed trifluoromethylarylation reaction of alkynes has been developed. It represents the first example of endo-type carbotrifluoromethylation of unsaturated carbon-carbon bonds.
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Mn(III)-mediated reactions of 2-isocyanobiaryl with 1,3-dicarbonyl compounds: efficient synthesis of 6-alkylated and 6-monofluoro-alkylated phenanthridines

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12892-12895
DOI: 10.1039/C4CC05324A, CommunicationJia-Jia Cao, Xiang Wang, Shun-Yi Wang, Shun-Jun Ji
Mn(III)-mediated reactions of 2-isocyanobiaryls with 1,3-dicarbonyl compounds were described for the construction of 6-alkylated and 6-monofluoro-alkylated phenanthridines in moderate to good yields.
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Hydride transfer from NADH analogues to a nonheme manganese(IV)-oxo complex via rate-determining electron transfer

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12944-12946
DOI: 10.1039/C4CC05313C, CommunicationHeejung Yoon, Yong-Min Lee, Wonwoo Nam, Shunichi Fukuzumi
Hydride transfer from NADH analogues to a nonheme Mn(IV)-oxo complex, [(Bn-TPEN)MnIV(O)]2+, proceeds via a rate-determining electron transfer step with no deuterium kinetic isotope effect (KIE = 1.0 +/- 0.1) and via charge-transfer complexes formed in the reactions of Mn(IV)-oxo and NADH analogues.
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