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103,889 Newest Publications about the topic synthesis

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An efficient copper catalyzed 3D mesoporous aluminosilicate for the synthesis of dibenzodiazonines in Ullmann cross-coupling reaction

03-Jul-2018 | Udayakumar Veerabagu; Gowsika udayakumar; Arumugam Pandurangan; Sabarathinam Shanmugam; Lu Fushen, New Journal of Chemistry, 2018

A series of copper oxide with different weight percentages such as 2%, 4% & 6% supported on three dimensional mesoporous aluminosilicates have been prepared by hydrothermal method, the effects of loading amount on the support, interactions of components and surface properties were systematically ...

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Rare-earth metal bis(aminobenzyl) complexes supported by pyrrolyl-functionalized arylamide ligands: synthesis, characterization and styrene polymerization performance

03-Jul-2018 | Min Li; Chaopan Wang; Hongzhen Xie; Zehuai Mou; Yunjie Luo, Dalton Transactions, 2018

Acid-base reaction between the rare-earth tris(o-dimethylaminobenzyl) complexes Ln(CH2C6H4NMe2-o)3 and the pyrrolyl-functionalized arylamide ligands 2,5-Me2C4H2NCH2SiMe2NHC6H4R (R = H, (HL1); R = Cl-p, (HL2)) was investigated. Treatment of HL1 and HL2 with 1 equiv. of Ln(CH2C6H4NMe2-o)3 in ...

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Tetranuclear and dinuclear phenoxido bridged copper complexes based on unsymmetrical thiosemicarbazone ligands

03-Jul-2018 | Catherine Belle; James Alfred Isaac; Ali Taher Mansour; Rolf David; Amelie Kochem; Christian Philouze; Serhiy Demesh ..., Dalton Transactions, 2018

We report on the synthesis of new dinucleating phenol-based “end-off” compartmental ligands HLMeH and HLMe2 bearing two different binding sites, one bis(2-methylpyridyl)aminomethyl (BPA) and one thiosemicarbazone (TSC) site, and their corresponding copper(II) complexes 1t and 2d. With the ligand ...

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Synthesis and structure of arylselenium(II) and aryltellurium(II) cations based on rigid 5-tert-butyl-1,3-bis-(N-pentylbenzimidazol-2[prime or minute]-yl)benzenes

03-Jul-2018 | Varsha Rani; Manjusha Boda; Saravanan Raju; G. Naresh Patwari; Harkesh B. Singh; Ray J. Butcher, Dalton Transactions, 2018

The transmetalation reactions of a mercury precursor, [Pentyl(N^C^N)HgCl] (19), with selenium halides (SeCl4, SeBr4, and SeCl2) were attempted to obtain the corresponding organoselenium trichloride [Pentyl(N^C^N)SeCl3], tribromide [Pentyl(N^C^N)SeBr3], and monochloride [Pentyl(N^C^N)SeCl], ...

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Synthesis, photophysical, antibacterial and larvicidal studies on triazolophanes with 5-nitro isophthalate functionality at the intraannular position

03-Jul-2018 | Sivasamy Selvarani; Perumal Rajakumar; Subramani Nagaraj; Manisha Choudhury; Devadasan Velmurugan, New Journal of Chemistry, 2018

1 : 1 and 2 : 2 oligomeric triazolophanes with 5-nitro isophthalate and triazolyl functionalities at the intraannular position have been synthesized by copper(i) catalyzed 1,3 dipolar cycloaddition of the corresponding propargylic esters with various phenyl substituted aliphatic azides under mild ...

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Sustainable synthesis of single crystalline sulphur-doped graphene quantum dots for bioimaging and beyond

03-Jul-2018 | Monalisa Mukherjee; Sujata Sangam; Apoorv Gupta; Adeeba Shakeel; Rohan Bhattacharya; Arun Kumar Sharma; Dr. Deepa Su ..., Green Chemistry, 2018

The forbearing race of biomedical applications has given peak momentum to iconic trendsetter graphene quantum dots (GQDs). GQDs are zero-dimensional fluorescent carbon-nanomaterials, entailing pronounced quantum confinement effect, abundant edge states, and functional groups. Despite its ...

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1,8-Diamidocarbazoles: an easily tuneable family of fluorescent anion sensors and transporters

03-Jul-2018 | Krzysztof Marek Bąk; Krzysztof Chabuda; Helena Montes; Roberto Quesada; Michał Jan Chmielewski, Organic & Biomolecular Chemistry, 2018

The synthesis, structure and anion recognition properties of an extensive, rationally designed series of bisamide derivatives of 1,8-diaminocarbazole and 1,8-diamino-3,6-dichlorocarbazole are described. Despite simple structures and the presence of only three hydrogen bond donors, such compounds ...

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CO2 Promoted Synthesis of Unsymmetrical Organic Carbonate by Switchable Agents Based on DBU and Alcohols

03-Jul-2018 | Qingwen Gu; Jian Fang; Zichen Xu; Wenxiu Ni; Kang Kong; Zhenshan Hou, New Journal of Chemistry, 2018

1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) is an effective nucleophilic catalyst for transesterification of dimethyl carbonate (DMC) with various alcohol and amines, which afforded the unsymmetrical organic carbonate and carbamate. It was observed that the transesterification was accelerated in the ...

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The discovery of a freezing-induced peptide ligation during the total chemical synthesis of human interferon-ε

03-Jul-2018 | Yin-He Yang; Bin Di; Da-Song Yang, Organic & Biomolecular Chemistry, 2018

A counterintuitive freezing-induced peptide ligation was discovered in the total synthesis of human interferon-ε (hIFN-ε) which blocks HIV infection through unique mechanisms. The successful synthesis of hIFN-ε (187 amino acids) in this research laid the foundation for related anti-AIDS drug ...

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CTAB-assisted size controlled synthesis of SAPO-34 and its contribution toward MTO performance

03-Jul-2018 | Syed ul Hasnain Bakhtiar; Xiaotong Wang; Sher Ali; Fulong Yuan; Zhibin Li; Yujun Zhu, Dalton Transactions, 2018

SAPO-34 shows higher light olefin selectivity in the reaction of methanol to olefin (MTO), but its small pore system implies diffusion limitation to bigger molecular products and results in coking too. To inhibit these limitations, sub-micrometric size SAPO-34 crystallites were successfully ...

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