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One-pot synthesis of highly fluorescent Fe2+-doped carbon dots for dual-emissive nanohybrid to detection of zinc ions and histidine

03-Jul-2018 | Bingyan Han; Tingting Peng; Mingbo Yu; Chen Chi; Ying Li; Xixi Hu; Gaohong He, New Journal of Chemistry, 2018

Metal ions-doping is paid a little attention comparing with the nonmetallic-element doping to improve the fluorescence intensity of carbon dots (CDs). Herein, Fe2+-doped CDs was facilely synthesized at 80 °C instead of hydrothermal method for the first time. Fe2+ was confirmed to be the only ...


Total Synthesis of the Proposed Structure of Talarolide A

03-Jul-2018 | Margaret A Brimble; Shengping Zhang; Luis Manuel M De Leon Rodriguez; Ivanhoe K. H. Leung; Paul Harrs; Renjie Huang, Organic & Biomolecular Chemistry, 2018

The proposed structure of talarolide A, a cycloheptapeptide featuring a hydroxamate moiety within the peptide backbone, was successfully synthesized. An initial attempt to synthesize a linear peptide precursor containing a C-terminal N-benzyloxy glycine residue was problematic due to an an ...


Arene-Tethered Silylene Ligand Enabling Reversible Dinitrogen Binding to Iron and Catalytic Silylation

03-Jul-2018 | Yunping Bai; Jianying Zhang; Chunming Cui, Chemical Communication, 2018

The arene-tetherd silylene ligand L (L = PhC(tBuN)2SiCH2C(tBu)NAr, Ar = 2,6-iPr2C6H3) allowed the synthesis of the three-coordinate Fe(II) silylamido and piano-stool Fe(0) dinitrogen complexes LFe[N(SiMe3)2]2 (3) and LFe-N2 (4), which not only exhibit interesting bonding but also enabled ...


Precursor-mediated synthesis of Cu2−xSe nanoparticles and their composites with TiO2 for improved photocatalysis

03-Jul-2018 | Sweta Gahlot; Erwann Jeanneau; Frederic Dappozze; Chantal Guillard; Shashank Mishra, Dalton Transactions, 2018

The direct synthesis of copper selenide nanoparticles from the reaction of ditertiarybutyl selenide tBu2Se with copper(ii) trifluoroacetate Cu(TFA)2 under mild conditions is reported. The isolation of a molecular species during the course of this reaction, established as [Cu2(TFA)2(tBu2Se)3], by ...


Synthesis of Poly(L-lactide)/[small beta]-cyclodextrin/citrate Networks Modified Hydroxyapatite and its Biomedical Properties

03-Jul-2018 | Wenjun Yi; Li-Jun Li; Hao He; Zhen Hao; Bo Liu; Yi Shen; Zi-Sheng Chao, New Journal of Chemistry, 2018

Hydroxyapatite (HA) was modified by chelation of citric acid and Ca on the surface of HA, followed by the cross-linking between the hydroxyl groups of β-cyclodextrin (β-CD) and citrate, and then further in situ ring-opening polymerization of L-lactide over the hydroxyl groups. The modification of ...


Asymmetric Organocatalytic Synthesis of Chiral 3,3-Disubstituted Oxindoles via 1,6-Conjugate Addition Reaction

03-Jul-2018 | Abdul Rahman; Qiaoxia Zhou; Xufeng Lin, Organic & Biomolecular Chemistry, 2018

A highly efficient synthesis of chiral 3,3-disubstituted oxindoles was developed by using a chiral spirocyclic phosphoric acid catalyzed 1,6-conjugate addition reaction of para-quinone methoids derived from N-unprotected isatins with indoles. The reaction proceeds under mild reaction conditions ...


Mixed-valence dimolybdenum complexes containing hard oxo and soft carbonyl ligands: Synthesis, structure, and electrochemistry of Mo2(O)(CO)2([small mu ]-к2-S(CH2)nS)2(к2-diphosphine)

03-Jul-2018 | Graeme Hogarth; Shishir Ghosh; Shariff Enamul Kabir; Michael G. Richmond; Mohd. Rezaul Haque; Tasneem Siddiquee; V ..., Dalton Transactions, 2018

Mixed-valence dimolybdenum complexes Mo2(O)(CO)2{μ-к2-S(CH2)nS}2(к2-Ph2P(CH2)mPPh2) (n=2,3; m=1,2) (1-4) have been synthesized from one-pot reactions of fac Mo(CO)3(NCMe)3 and dithiols, HS(CH2)nSH, in the presence of diphosphines. The dimolybdenum framework is supported by two thiolate bridges, ...


An efficient t-BuOK promoted C3-chalcogenylation of indoles with dichalcogenides

03-Jul-2018 | Yuanzu Yu; Yan Zhou; Zengqiang Song; Guang Liang, Organic & Biomolecular Chemistry, 2018

A versatile and efficient method for the synthesis of 3-chalcogenyl-indoles from indoles and dichalcogenides employing t-BuOK as a promoter at room temperature has been achieved. The present protocol exhibited a broad functional group tolerance. Diverse 3-sulfenyl- and 3-selenyl-indoles were ...


Insertion of CS2 into the Mg-H bond: synthesis and structural characterization of the magnesium dithioformate complex, [TismPriBenz]Mg([small kappa]2-S2CH)

03-Jul-2018 | Michael Rauch; Gerard Parkin, Dalton Transactions, 2018

The tris[(1-isopropylbenzimidazol-2-yl)dimethylsilyl]methyl magnesium hydride compound, [TismPriBenz]MgH, undergoes insertion of CS2 into the Mg–H bond at room temperature to give [TismPriBenz]Mg(κ2-S2CH), the first structurally characterized magnesium dithioformate compound. The dithioformate ...


Synthesis of zero-valent iron nanoparticles via laser ablation in a formate ionic liquid under atmospheric conditions

03-Jul-2018 | Shinya Okazoe; Yoshiro Yasaka; Masaki Kudo; Hiroshi Maeno; Yasukazu Murakami; Yoshifumi Kimura, Chemical Communication, 2018

Transition metal nanoparticles (NPs) are promising materials for use as catalysts in many processes, although they are easily oxidized under ambient conditions. In this communication, a novel synthetic method is proposed for producing zero-valent iron (Fe) NPs by laser ablation under atmospheric ...


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