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6,705 Newest Publications about the topic esters

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Synthesis of multi-substituted allenes from organoalane reagents and propargyl esters by nickel-catalyzed

20-Jun-2018 | xuebei shao; Zhen Zhang; Qinghan Li; Zhi-Gang Zhao, Organic & Biomolecular Chemistry, 2018

A highly efficient and simple route for the synthesis of multi-substituted allenes has been developed by Nickel catalyzed the SN2’ substitution reaction of propargyl esters with organic aluminium reagents under mild conditions, giving the corresponding product multi-substituted allenes in good to ...

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Molecules, Vol. 23, Pages 1480: Analysis of the Volatile Profile of Core Chinese Mango Germplasm by Headspace Solid-Phase Microextraction Coupled with Gas Chromatography-Mass Spectrometry

19-Jun-2018 | Ma, Xiao-Wei ; Su, Mu-Qing ; Wu, Hong-Xia ; Zhou, Yi-Gang ; Wang, Song-Biao, Molecules, 2018

Molecules, Vol. 23, Pages 1480: Analysis of the Volatile Profile of Core Chinese Mango Germplasm by Headspace Solid-Phase Microextraction Coupled with Gas Chromatography-Mass Spectrometry Molecules doi: 10.3390/molecules23061480 Authors: Xiao-Wei Ma Mu-Qing Su Hong-Xia Wu Yi-Gang ...

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Molecules, Vol. 23, Pages 1453: Anti-Mycobacterium tuberculosis Activity of Esters of Quinoxaline 1,4-Di-N-Oxide

15-Jun-2018 | Palos, Isidro ; Luna-Herrera, Julieta ; Lara-Ramírez, Edgar E.; Loera-Piedra, Alejandra ; Fernández-Ramírez, Emanue ..., Molecules, 2018

Molecules, Vol. 23, Pages 1453: Anti-Mycobacterium tuberculosis Activity of Esters of Quinoxaline 1,4-Di-N-Oxide Molecules doi: 10.3390/molecules23061453 Authors: Isidro Palos Julieta Luna-Herrera Edgar E. Lara-Ramírez Alejandra Loera-Piedra Emanuel Fernández-Ramírez Ma. ...

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Missing enzymes in the biosynthesis of the anticancer drug vinblastine in Madagascar periwinkle

15-Jun-2018 | Lorenzo Caputi; Jakob Franke; Scott C. Farrow; Khoa Chung; Richard M. E. Payne; Trinh-Don Nguyen; Thu-Thuy T. Dang; ..., Science , 2018

Vinblastine, a potent anticancer drug, is produced by Catharanthus roseus (Madagascar periwinkle) in small quantities, and heterologous reconstitution of vinblastine biosynthesis could provide an additional source of this drug. However, the chemistry underlying vinblastine synthesis makes ...

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Assimilable organic carbon (AOC) determination using GFP-tagged Pseudomonas fluorescens P-17 in water by flow cytometry

14-Jun-2018 | Peng Tang; Jie Wu; Hou Liu; Youcai Liu; Xingding Zhou, PLoS ONE, 2018

by Peng Tang, Jie Wu, Hou Liu, Youcai Liu, Xingding Zhou One of the newly developed methods for Assimilable organic carbon (AOC) determination is leveraged on the cell enumeration by flow cytometry (FC) which could provide a rapid and automated solution for AOC measurement. However, cell ...

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Molecules, Vol. 23, Pages 1450: In-Syringe Micro Solid-Phase Extraction Method for the Separation and Preconcentration of Parabens in Environmental Water Samples

14-Jun-2018 | Mashile, Geaneth Pertunia; Mpupa, Anele ; Nomngongo, Philiswa Nosizo, Molecules, 2018

Molecules, Vol. 23, Pages 1450: In-Syringe Micro Solid-Phase Extraction Method for the Separation and Preconcentration of Parabens in Environmental Water Samples Molecules doi: 10.3390/molecules23061450 Authors: Geaneth Pertunia Mashile Anele Mpupa Philiswa Nosizo Nomngongo In ...

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Catalytic Alkylation Reactions of Weakly Acidic Carbonyl and Related Compounds Using Alkenes as Electrophiles

12-Jun-2018 | Yasuhiro Yamashita; Ryo Igarasgi; Hirotsugu Suzuki; Shu Kobayashi, Organic & Biomolecular Chemistry, 2018

Catalytic alkylation reactions of weakly acidic carbonyl and related pronucleophiles such as amides, esters, and sulfonamides with substituted alkenes are reported. In the presence of a strong Brønsted base catalyst system, potassium hexamethyldisilazide and 18-crown-10 ether, the desired ...

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Metal-free benzannulation of yne-allenone esters for atom-economic synthesis of functionalized 1-naphthols

12-Jun-2018 | Bo Jiang; Hong-Kai Sha; Feng Liu; Juan Lu; Zhang-Qin Liu; Wen-Juan Hao; Jia-Le Wu; Shu-Jiang Tu, Green Chemistry, 2018

A new metal-free benzannulation reaction of yne-allenone esters with H2O by using HOAc as a Lewis acid promoter is reported, providing an atom-economic protocol toward aroyl 1-naphthols with good to excellent yields. Exchanging H2O for aromatic amines resulted in iminated Z-1-naphthols with high ...

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Aerobic oxidative esterification of 5-hydroxymethylfurfural to dimethyl furan-2, 5-dicarboxylate by using homogeneous and heterogeneous PdCoBi/C catalysts under atmospheric oxygen

12-Jun-2018 | Feng Li; Xing-Long Li; Chuang Li; Jing Shi; Yao Fu, Green Chemistry, 2018

Conversion of platform molecule 5-hydroxymethylfurfural (HMF) into highvalue-added derivatives has attracted significant interest. FDCA and its esters are important derivatives of HMF, which can be used as polyester monomers and pharmaceutical intermediates. In this paper, the oxidative ...

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In Situ Generation of Nitrile Oxides from Copper Carbene and tert-Butyl Nitrite: Synthesis of Fully Substituted Isoxazoles

12-Jun-2018 | Xiaobing Wan; Rongxiang Chen; Abosede Adejoke Ogunlana; Shangwen Fang; Wenhao Long; Hong Mei Sun; Xiaoguang Bao, Organic & Biomolecular Chemistry, 2018

Herein, we present a novel [3+2] cycloaddition reaction of -keto esters with nitrile oxides, which is generated in situ from copper carbene and tert-butyl nitrite. This three-component reaction provides a new methodology for the direct synthesis of fully substituted isoxazole derivatives, ...

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