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Showing 21-40 of 514 results
  1. Recent advances in the synthesis and application of N-heterocyclic carbene-based molecular cages

    N-Heterocyclic carbene (NHC)-based cages have emerged as a prominent and dynamic research area within the research field of chemistry. Leveraging the...

    Qiongjie Chai, Lixin Duan, ... Tao Tu in Science China Chemistry
    Article 08 April 2024
  2. Formation of thiovanadyl porphyrins under a high-temperature treatment of heavy crude oil

    It has been shown for the first time that the high-temperature treatment of heavy oil with a high content of asphaltenes at 350–450 °C without a...

    S. N. Trukhan, A. M. Chibiryaev, O. N. Martyanov in Russian Chemical Bulletin
    Article 01 February 2023
  3. Photocatalytic activity of pyrazinoporphyrin in the presence of gold nanoparticles and nanoclusters

    The effect of gold nanoparticles and nanoclusters on the catalytic activity of dicarboxy-substituted pyrazinoporphyrin was studied using the...

    D. A. Polivanovskaia, K. P. Birin, ... A. Yu. Tsivadze in Russian Chemical Bulletin
    Article 01 November 2021
  4. Copper-catalyzed intermolecular formal (5 + 1) annulation of 1,5-diynes with 1,2,5-oxadiazoles

    One-carbon homologation reactions based on one-carbon insertion into the N−O bond of heterocycles have received tremendous interest over the past...

    Can-Ming Chen, Ye-Nan Yang, ... Long-Wu Ye in Communications Chemistry
    Article Open access 12 September 2023
  5. Solving the activity–stability trade-off riddle

    Shengwen Liu, Qiurong Shi, Gang Wu in Nature Catalysis
    Article 21 January 2021
  6. Assessing and measuring the active site density of PGM-free ORR catalysts

    Fuel cells are already employed in commercial transportation even though their price is still too high to enable widespread production. A viable and...

    Rifael Z. Snitkoff-Sol, Lior Elbaz in Journal of Solid State Electrochemistry
    Article 20 July 2022
  7. Copper(II) phthalocyanine as an efficient and versatile catalyst for click reactions at room temperature

    Herein, we report the efficient synthesis of copper(II) phthalocyanines in the presence of DBU as a strong base. These synthesized copper(II)...

    Kumar Karitkey Yadav, Uma Narang, ... S. M. S. Chauhan in Journal of the Iranian Chemical Society
    Article 29 June 2022
  8. Effect of the Nature of Nitrogen-Containing Bases on Their Catalytic Activity in the Reaction of the Formation of a Zinc Complex with Tetra(4-tert-butyl-5-phenylsulphanil)phthhalocyanine in Benzene

    Abstract

    The effect of cyclic and acyclic nitrogen-containing organic bases on the formation of a zinc complex with tetra(4- tert -butyl-5-phenylsulfany...

    O. A. Petrov, V. E. Maizlish in Russian Journal of General Chemistry
    Article 01 June 2023
  9. High Selectivity of Medium Distillates in Fischer–Tropsch Synthesis Using Dual Bed

    A dual bed was used as an alternative to favor Fischer–Tropsch Synthesis (FTS) selectivity towards products with higher added value (C 10 –C 20 ), as...

    Gisele Westphalen, Karine Alves Cortez, ... Victor Teixeira da Silva in Catalysis Letters
    Article 23 October 2021
  10. Synthesis and photodynamic effects of new porphyrin/4-oxoquinoline derivatives in the inactivation of S. aureus

    New porphyrin/4-oxoquinoline conjugates were synthesized from the Heck coupling reaction of a β-brominated porphyrin with 1-allyl-4-oxoquinoline...

    Fernanda Savacini Sagrillo, Cristina Dias, ... José A. S. Cavaleiro in Photochemical & Photobiological Sciences
    Article 01 August 2019
  11. Production of Low-Sulfur High-Viscosity Marine Fuel by Hydrotreatment of Oil Residues

    The article presents the results of tests of a system of catalysts developed for demetallation and desulfurization of oil residues to produce...

    L. A. Gulyaeva, V. A. Khavkin, ... P. A. Nikul’shin in Chemistry and Technology of Fuels and Oils
    Article 15 January 2019
  12. Advances in Metal-Catalyzed Denitrogenative Pathways for N-Heterocycle Synthesis

    For more than a century, cutting-edge research in organic chemistry has been the discovery of novel, powerful synthetic procedures to create very...

    Deepak Ranjan Mishra, Subhendu Chakroborty, ... Madhubanti Mukopadhyay in Topics in Catalysis
    Article 24 October 2023
  13. Reduced thermodynamic stability as prerequisite for aggregation of SOD1 mutants: a path through the reduction in intramolecular disulfide bonds

    Amyotrophic lateral sclerosis is a fatal, devastating, rapidly progressive, adult onset neurodegenerative disease, which is involved in the formation...

    Shima Famil Samavati, Maryam Nikkhah, ... Reza Khodarahmi in Journal of the Iranian Chemical Society
    Article 24 March 2020
  14. Identification of durable and non-durable FeNx sites in Fe–N–C materials for proton exchange membrane fuel cells

    While Fe–N–C materials are a promising alternative to platinum for catalysing the oxygen reduction reaction in acidic polymer fuel cells, limited...

    **gkun Li, Moulay Tahar Sougrati, ... Frédéric Jaouen in Nature Catalysis
    Article 07 December 2020
  15. Complexation of Halogen-Substituted Tetraphenylporphyrins and Cadmium(II) Tetraphenylporphyrins with MnCl2 in DMF

    Abstract

    The complexation of 5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrin and 5,10,15,20-tetrakis(2,6-difluorophenyl)porphyrin and metal exchange...

    S. V. Zvezdina, N. V. Chizhova, N. Zh. Mamardashvili in Russian Journal of Organic Chemistry
    Article 01 April 2023
  16. Photodegradation of free base and zinc porphyrins in the presence and absence of oxygen

    Comparison of photostability in degassed and aerated toluene solutions is reported for 5,10,15,20-tetraphenylporphyrin, 5,10,15-tri( p -tolyl)porphyrin,...

    Barbara Golec, Joanna Buczyńska, ... Jacek Waluk in Photochemical & Photobiological Sciences
    Article Open access 29 September 2023
  17. Synthesis and Functionalization of Unsymmetrical Terbium(III) Bis-Phthalocyaninates, Promising Components of Hybrid Magnetic Materials

    Abstract

    A new unsymmetrical terbium bis-Phthalocyaninate Tb(A 7 B) with one terminal aliphatic OH group was obtained by template cross-condensation of...

    A. V. Yagodin, I. D. Kormshchikov, ... A. Yu. Tsivadze in Russian Journal of Inorganic Chemistry
    Article 01 September 2023
  18. Enantioselective fullerene functionalization through stereochemical information transfer from a self-assembled cage

    The regioselective functionalization of C 60 remains challenging, while the enantioselective functionalization of C 60 is difficult to explore due to...

    Zifei Lu, Tanya K. Ronson, ... Jonathan R. Nitschke in Nature Chemistry
    Article 22 December 2022
  19. Catalytic asymmetric synthesis of carbocyclic C-nucleosides

    Access to carbocyclic C-nucleosides (CC-Ns) is currently restricted. The few methods available to make CC-Ns suffer from long syntheses and poor...

    Sourabh Mishra, Florian C. T. Modicom, ... Stephen P. Fletcher in Communications Chemistry
    Article Open access 19 November 2022
  20. Dispersed cobalt oxide on non-conductive zeolite assembly for electrocatalytic water splitting

    Electrochemical water splitting has been undergoing wide investigations due to their significance toward economic production of green hydrogen....

    Aniz Chennampilly Ummer, Abdul-Rahman F. Al-Betar in Journal of Solid State Electrochemistry
    Article 30 October 2023
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