LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 26419

Search options

  1. Article ; Online: Heteropolyacid-Catalyzed Phosphorylation of Secondary Aromatic Alcohols with H-Phosphine Oxides in DMC: A Simple Protocol for C-P Bond Formation.

    Zhuang, Hongfeng / Wan, Peng / Miao, Chengxia / Yang, Yang / Liang, Shuyan / Han, Feng

    The Journal of organic chemistry

    2024  Volume 89, Issue 4, Page(s) 2397–2407

    Abstract: We successfully achieved the phosphorylation of secondary aromatic alcohols with H-phosphine oxides ...

    Abstract We successfully achieved the phosphorylation of secondary aromatic alcohols with H-phosphine oxides (less developed system) using phosphotungstic acid as a catalyst in dimethyl carbonate. The system was simple and environmentally friendly and showed better activity than traditional Lewis or Brønsted acids such as FeCl
    Language English
    Publishing date 2024-01-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.3c02409
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article ; Online: P-cresol degradation through Fe(III)-EDDS/H

    Xiao, Meng / Qi, Yanfeng / Feng, Qingmin / Li, Kun / Fan, Kaiqi / Huang, Tingting / Qu, Pei / Gai, Hengjun / Song, Hongbing

    Chemosphere

    2020  Volume 269, Page(s) 129436

    Abstract: P-cresol is a highly toxic phenolic pollutant in coal chemical wastewater. The effective removal ... of p-cresol is of great significance to the ecological environment. In this study, the degradation of p ... cresol by the Fe(III)-EDDS/H ...

    Abstract P-cresol is a highly toxic phenolic pollutant in coal chemical wastewater. The effective removal of p-cresol is of great significance to the ecological environment. In this study, the degradation of p-cresol by the Fe(III)-EDDS/H
    MeSH term(s) Cresols ; Ferric Compounds ; Hydrogen Peroxide ; Hydrogen-Ion Concentration ; Manganese ; Oxidation-Reduction
    Chemical Substances Cresols ; Ferric Compounds ; 4-cresol (1MXY2UM8NV) ; Manganese (42Z2K6ZL8P) ; Hydrogen Peroxide (BBX060AN9V)
    Language English
    Publishing date 2020-12-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2020.129436
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2540: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article ; Online: Machine Learning and Quantum Calculation for Predicting Yield in Cu-Catalyzed P-H Reactions.

    Ma, Youfu / Zhang, Xianwei / Zhu, Lin / Feng, Xiaowei / Kowah, Jamal A H / Jiang, Jun / Wang, Lisheng / Jiang, Lihe / Liu, Xu

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 16

    Abstract: ... the transition state and yield of copper-catalyzed P-H insertion reactions. By analyzing a dataset of 120 ...

    Abstract The paper discussed the use of machine learning (ML) and quantum chemistry calculations to predict the transition state and yield of copper-catalyzed P-H insertion reactions. By analyzing a dataset of 120 experimental data points, the transition state was determined using density functional theory (DFT). ML algorithms were then applied to analyze 16 descriptors derived from the quantum chemical transition state to predict the product yield. Among the algorithms studied, the Support Vector Machine (SVM) achieved the highest prediction accuracy of 97%, with over 80% correlation in Leave-One-Out Cross-Validation (LOOCV). Sensitivity analysis was performed on each descriptor, and a comprehensive investigation of the reaction mechanism was conducted to better understand the transition state characteristics. Finally, the ML model was used to predict reaction plans for experimental design, demonstrating strong predictive performance in subsequent experimental validation.
    Language English
    Publishing date 2023-08-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28165995
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article ; Online: A p-toluenesulfonamide-modified benzo[h]chromene hydrazone: Fluorescent turn-on detection of hypochlorite and its application to imaging the endoplasmic reticula of living cells and zebrafishes.

    Tian, Yu-Man / Liu, Gao-Bing / Wu, Wei-Na / Zhao, Xiao-Lei / Han, Xue-Feng / Fan, Yun-Chang / Wang, Yuan / Xu, Zhi-Hong

    Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

    2023  Volume 296, Page(s) 122669

    Abstract: Hypochlorite ( ... ...

    Abstract Hypochlorite (ClO
    MeSH term(s) Animals ; Fluorescent Dyes ; Hypochlorous Acid ; Zebrafish ; Benzopyrans ; Optical Imaging ; Endoplasmic Reticulum
    Chemical Substances Fluorescent Dyes ; Hypochlorous Acid (712K4CDC10) ; Benzopyrans
    Language English
    Publishing date 2023-03-27
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 210413-1
    ISSN 1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
    ISSN (online) 1873-3557
    ISSN 0370-8322 ; 0584-8539 ; 1386-1425
    DOI 10.1016/j.saa.2023.122669
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 51/98: Show issues
    Z 1611 a: Show issues
    924/340: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article: Enhanced Energy Density for P-Doped Hierarchically Porous Carbon-Based Symmetric Supercapacitor with High Operation Potential in Aqueous H

    Wu, Xiaozhong / Yang, Xinping / Feng, Wei / Wang, Xin / Miao, Zhichao / Zhou, Pengfei / Zhao, Jinping / Zhou, Jin / Zhuo, Shuping

    Nanomaterials (Basel, Switzerland)

    2021  Volume 11, Issue 11

    Abstract: ... the porosity of HPC. The specific surface area and P content for HPC can reach up to 892 m ...

    Abstract Phosphorus-doped hierarchically porous carbon (HPC) is prepared with the assistance of freeze-drying using colloid silica and phytic acid dipotassium salt as a hard template and phosphorus source, respectively. Intensive material characterizations show that the freeze-drying process can effectively promote the porosity of HPC. The specific surface area and P content for HPC can reach up to 892 m
    Language English
    Publishing date 2021-10-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano11112838
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Article ; Online: General Oxidative Aryl C-P Bond Formation through Palladium-Catalyzed Decarbonylative Coupling of Aroylhydrazides with P(O)H Compounds.

    Dong, Jianyu / Liu, Long / Ji, Xuyu / Shang, Qian / Liu, Lixin / Su, Lebin / Chen, Bing / Kan, Ruifeng / Zhou, Yongbo / Yin, Shuang-Feng / Han, Li-Biao

    Organic letters

    2019  Volume 21, Issue 9, Page(s) 3198–3203

    Abstract: Oxidative C-C/P-H cross-coupling is achieved via Pd-catalyzed decarbonylative cross-coupling ... of aroylhydrazides with P(O)H compounds. The unique cooperative reaction system, especially the Brønsted acid and ... of the undesired oxidation and coordination of >P(O)-H compounds, leading to a general oxidative synthesis of aryl ...

    Abstract Oxidative C-C/P-H cross-coupling is achieved via Pd-catalyzed decarbonylative cross-coupling of aroylhydrazides with P(O)H compounds. The unique cooperative reaction system, especially the Brønsted acid and bidentate phosphine ligand, allows the selective activation of the inert C-C bond and the suppression of the undesired oxidation and coordination of >P(O)-H compounds, leading to a general oxidative synthesis of aryl phosphorus compounds from easily available substrates.
    Language English
    Publishing date 2019-04-18
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1523-7052
    ISSN (online) 1523-7052
    DOI 10.1021/acs.orglett.9b00922
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Article ; Online: Improvement of butanol production in Clostridium acetobutylicum through enhancement of NAD(P)H availability.

    Qi, Feng / Thakker, Chandresh / Zhu, Fayin / Pena, Matthew / San, Ka-Yiu / Bennett, George N

    Journal of industrial microbiology & biotechnology

    2018  Volume 45, Issue 11, Page(s) 993–1002

    Abstract: ... metabolites. Here the exogenous genes of ferredoxin-NAD(P) ...

    Abstract Clostridium acetobutylicum is a natural producer of butanol, butyrate, acetone and ethanol. The pattern of metabolites reflects the partitioning of redox equivalents between hydrogen and carbon metabolites. Here the exogenous genes of ferredoxin-NAD(P)
    MeSH term(s) 1-Butanol/metabolism ; Acetone/metabolism ; Butanols/metabolism ; Butyrates/metabolism ; Clostridium acetobutylicum/genetics ; Ethanol/metabolism ; Fermentation ; Hydrogen/metabolism ; NAD/chemistry ; NADP/chemistry ; Oxidation-Reduction
    Chemical Substances Butanols ; Butyrates ; NAD (0U46U6E8UK) ; Acetone (1364PS73AF) ; Ethanol (3K9958V90M) ; NADP (53-59-8) ; Hydrogen (7YNJ3PO35Z) ; 1-Butanol (8PJ61P6TS3)
    Language English
    Publishing date 2018-08-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1482484-x
    ISSN 1476-5535 ; 1367-5435
    ISSN (online) 1476-5535
    ISSN 1367-5435
    DOI 10.1007/s10295-018-2068-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article: Synthesis of P- and S-Stereogenic Compounds via Enantioselective C–H Functionalization

    Qian, Pu-Fan / Li, Jun-Yi / Zhou, Tao / Shi, Bing-Feng

    Synthesis

    2022  Volume 54, Issue 21, Page(s) 4784–4794

    Abstract: Transition metal-catalyzed enantioselective C–H functionalization has emerged as an efficient and ... a complementary pathway to the construction of P - and S -stereogenic compounds. In this short review ... compounds via enantioselective C–H functionalization. 1 ...

    Abstract Transition metal-catalyzed enantioselective C–H functionalization has emerged as an efficient and powerful strategy to access various chiral molecules. Recently, this strategy has also provided a complementary pathway to the construction of P - and S -stereogenic compounds. In this short review, we summarize the development and applications of various catalytic systems: Pd(II)/mono- N -protected amino acids (MPAA), Pd(0)/trivalent phosphorus chiral ligands, chiral cyclopentadienyl-ligated metal catalysts [Cp x M(III)] (M = Rh, Ir), half-sandwich d 6 Ir(III) and Ru(II) with a chiral carboxylic acid (CCA) ligand, Ir(I)/chiral bidentate boryl ligand, and Ir(I)/chiral cation, for accessing these chiral compounds via enantioselective C–H functionalization. 1

    Introduction 2

    Pd(II)/Mono- N -protected Amino Acids 3

    Pd(0)/Trivalent Phosphorus Chiral Ligands 4

    Chiral Cyclopentadienyl-Ligated Metal Catalysts [Cp x M(III)] (M = Rh, Ir) 5

    Half-sandwich d 6 Ir(III) and Ru(II) with a Chiral Carboxylic Acid (CCA) Ligand 6

    Ir(I)/Chiral Bidentate Boryl Ligand 7

    Ir(I)/Chiral Cation 8

    Conclusion and Outlook
    Keywords enantioselectivity ; C–H functionalization ; - and ; -stereogenic compounds ; chiral ligands ; transition metals
    Language English
    Publishing date 2022-03-18
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2033062-5
    ISSN 1437-210X ; 0039-7881
    ISSN (online) 1437-210X
    ISSN 0039-7881
    DOI 10.1055/a-1802-6793
    Database Thieme publisher's database

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  9. Article ; Online: [NAD(P)H-dependent oxidoreductases for synthesis of chiral amines by asymmetric reductive amination of ketones].

    Cheng, Feng / Li, Qinghua / Li, Heng / Xue, Yaping

    Sheng wu gong cheng xue bao = Chinese journal of biotechnology

    2020  Volume 36, Issue 9, Page(s) 1794–1816

    Abstract: ... of chiral amines Among them, the development of reductive amination reactions catalyzed by NAD(P)H-dependent ... mechanism, protein engineering and the application in reductive amination reactions of NAD(P)H-dependent ...

    Abstract Asymmetric reductive amination is one of the most important reactions in the preparation of chiral amine pharmaceutical intermediates. Different kinds of enzymes have been applied to the synthesis of chiral amines Among them, the development of reductive amination reactions catalyzed by NAD(P)H-dependent oxidoreductases is attractive, as it would permit a one-step transformation of prochiral ketones into chiral amines with high optical purity. In this review, the recent advances in enzyme structure, catalytic mechanism, protein engineering and the application in reductive amination reactions of NAD(P)H-dependent oxidoreductases, including imine reductase, amino acid dehydrogenase, opine dehydrogenase and reductive aminase, are summarized.
    MeSH term(s) Amination ; Amines ; Biocatalysis ; Ketones ; NAD/metabolism ; Stereoisomerism
    Chemical Substances Amines ; Ketones ; NAD (0U46U6E8UK)
    Language Chinese
    Publishing date 2020-11-09
    Publishing country China
    Document type Journal Article ; Review
    ZDB-ID 1042206-7
    ISSN 1872-2075 ; 1042-749X
    ISSN (online) 1872-2075
    ISSN 1042-749X
    DOI 10.13345/j.cjb.190582
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 3505: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  10. Article ; Online: Copper-Catalyzed Regioselective C-H Sulfonyloxylation of Electron-Rich Arenes with p-Toluenesulfonic Acid and Sulfonyloxylation of Aryl(mesityl)iodonium Sulfonates.

    Huang, He / Wu, Yang / Zhang, Wen / Feng, Chun / Wang, Bi-Qin / Cai, Wan-Fei / Hu, Ping / Zhao, Ke-Qing / Xiang, Shi-Kai

    The Journal of organic chemistry

    2017  Volume 82, Issue 6, Page(s) 3094–3101

    Abstract: Copper-catalyzed regioselective C-H sulfonyloxylation of electron-rich arenes with p ... toluenesulfonic acid has been developed. Electron-rich benzene derivatives and heteroarenes can undergo this C-H ...

    Abstract Copper-catalyzed regioselective C-H sulfonyloxylation of electron-rich arenes with p-toluenesulfonic acid has been developed. Electron-rich benzene derivatives and heteroarenes can undergo this C-H sulfonyloxylation reaction to generate aryl tosylates. Furthermore, sulfonyloxylation of aryl(mesityl)iodonium sulfonates has also been investigated. Both aryl(mesityl)iodonium tosylates and triflates can react smoothly to get aryl sulfonates. The formed aryl sulfonates can be converted to phenols, as well as used as good partners of cross-coupling reactions.
    Language English
    Publishing date 2017-03-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.7b00081
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top