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104.077 Aktuelle Fachpublikationen zum Thema synthesis

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Total Synthesis of Pipecolic Acid and 1-C-Alkyl 1,5-Iminopentitol Derivatives by way of Stereoselective Aldol Reactions from (S)-Isoserinal

24.01.2018 | Sebastian Baś; Rafał Kusy; Monika Pasternak-Suder; Cyril NICOLAS; Jacek Mlynarski; Olivier Martin, Organic & Biomolecular Chemistry, 2018

A short synthesis of iminosugars and pipecolic acid derivatives has been realized through aldol addition of a pyruvate, a range of ketones and (S)-isoserinal, followed by catalytic reductive intramolecular amination. The stereoselective aldol reaction was achieved successfully by using tertiary ...

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Synthesis and property of wide bandgap polymers based on tetraphenylsilane and their applications as hosts in electrophosphorescent devices

24.01.2018 | Ping Lu; Xiaoxiao Li; Qing Bai; Jinyu Li; Fang Lu; Xiaoyi Sun, New Journal of Chemistry, 2018

Wide bandgap materials are of significant importance in organic optoelectronic field. In this work, diphenylphosphine oxide-functionalized tetraphenylsilane moiety is designed and applied in the construction of wide bandgap materials. Wide bandgap polymer, PFSCPO, is synthesized via Suzuki ...

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Novel mono, di and tri-fatty acid esters bearing secondary amino acid ester head groups as transdermal permeation enhancers

24.01.2018 | S. Rambharose; R. S. Kalhapure; M. Jadhav; T. Govender, New Journal of Chemistry, 2018

The use of chemical permeation enhancers (CPEs) has widened the pool of drugs that can be delivered via the transdermal route. This study explored the synthesis and characterization of novel mono, di and tri-fatty acid (FA) esters bearing β-alanine t-butyl ester head groups as transdermal ...

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Heterocyclic amino acids as fluorescent reporters for transition metals: synthesis and evaluation of novel furyl-benzoxazol-5-yl-L-alanines

24.01.2018 | Cristina Ferreira; Maria Manuela Marques Raposo; Susana Costa, New Journal of Chemistry, 2018

Unnatural alanine derivatives bearing a benzoxazole at the side chain, acting simultaneously as the coordinating and reporting unit, via fluorescence changes, were synthesised with a furan ring at position 2, substituted with different (hetero)aryl substituents, in order to tune the photophysical ...

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Natural products and ring-closing metathesis: synthesis of sterically congested olefins

24.01.2018 | C. Lecourt; S. Dhambri; L. Allievi; Y. Sanogo; N. Zeghbib; R. Ben Othman; M.-I. Lannou; G. Sorin; J. Ardisson, Natural Product Reports, 2018

Covering: 2002 to August 2017.This review highlights recent RCM reactions towards the synthesis of sterically congested natural products. It offers an insight into various synthetic targets and approaches and provides information on the evolution of catalysts as powerful tools enabling the use of ...

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Micrometer-sized dihydrogenphosphate-intercalated layered double hydroxides: synthesis, selective infrared absorption properties, and applications as agricultural films

24.01.2018 | Yixuan Guo; Jing Wang; Dianqing Li; Pinggui Tang; Fabrice Leroux; Yongjun Feng, Dalton Transactions, 2018

High-performance heat-retention agents for multifunctional green agricultural films are today largely suitable to increase the production yield as well as to save energy. Here, an adapted ammonia releasing hydrothermal method was used to produce a series of micrometer-sized carbonate-layered ...

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Lignin nanoparticles: Synthesis, characterization and their corrosion protection performance

24.01.2018 | Obaid ur Rahman; Shubin Shi; jiheng ding; Dondlin Wang; Sharif Ahmad; Haibin Yu, New Journal of Chemistry, 2018

Conversion of micro lignin to lignin nanoparticles (LNP) and their application in engineering and technology is a potential step towards global sustainability because lignin obtained from industrial and agricultural waste, and green chemistry stimulate their utilization. Present work reports the ...

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Saline hybrid nanoparticles with phthalocyanine and tetraphenylporphine anions showing efficient singlet-oxygen production and photocatalysis

24.01.2018 | Marieke Poß; Henriette Gröger; Claus Feldmann, Chemical Communication, 2018

The inorganic–organic hybrid nanoparticles Gd43+[AlPCS4]34− and La43+[TPPS4]34− ([AlPCS4]4−: aluminium(iii) chlorido phthalocyanine tetrasulfonate; [TPPS4]4−: tetraphenylporphine sulfonate) are shown for the first time. Both were obtained via aqueous synthesis and contain extremely high contents ...

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Harvesting visible light with MoO3 nanorod modified by Fe(III) nanocluster for effective photocatalytic degradation of organic pollutants

23.01.2018 | Mohammad Muneer; Umair Alam; Sunil kumar; Detlef Bahnemann W. Detlef Bahnemann; Julian Koch; Christoph Tegenkamp, Physical Chemistry Chemical Physics, 2018

The photocatalytic performance of MoO3 is limited due to its weak visible light absorption ability and quick recombination of charge carriers. In the present work, we report the facile synthesis of Fe(III)-grafted MoO3 nanorod using hydrothermal method followed by impregnation technique with an ...

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Synthesis of samarium-doped zinc oxide nanoparticles with improved photocatalytic performance and recyclability under visible light irradiation

23.01.2018 | Mohd Faraz; Faria K. Naqvi; Mohammad Shakir; Neeraj Khare, New Journal of Chemistry, 2018

Samarium-doped ZnO nanoparticles (1%, 3%, and 5%) were synthesized by a gel-combustion route and their application as an efficient photocatalyst for the degradation of Malachite green (MG) dye is demonstrated. These nanoparticles were characterized by spectroscopic techniques (UV-vis and ...

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