Showing 321 - 340 results of 847 for search '"aromaticity"', query time: 0.04s Refine Results
  1. 321

    An Investigation of the Enolization and Isomeric Products Distribution in the Water Promoted Aldol Reaction of Tropinone and Granatanone by Ryszard Lazny, Artur Ratkiewicz, Krzysztof Brzezinski, Aneta Nodzewska, Katarzyna Sidorowicz

    Published 2016-01-01
    “…The exo,anti/exo,syn-diastereoselectivity of water promoted direct aldol reactions of tropinone and granatanone (pseudopelletierine) is strongly dependent on the amount of water added and aromatic aldehyde used. DFT methods were applied to calculate the free energies of tropinone and granatanone enols, transition states, and isomeric aldol products. …”
    Get full text
    Article
  2. 322

    Process-based VOCs Source Profiles and Contributions to Ozone Formation in Typical Organic Solvent-used Industries in Hangzhou by Zhinian Li, Wenjuan Li, Rong Zhou, Xiaoping Miao, Jianhai Lu, Zhongren Wang, Zhongping Yang, Jian Wu

    Published 2021-06-01
    “…Process-based source profiles suggested that aromatics and alkanes accounted for more than 76.5% of VOCs, mainly including toluene, styrene, n-decane, n-undecane and n-dodecane. …”
    Get full text
    Article
  3. 323

    Assessment of Quality and Aroma Characteristics of Kefir Produced by Using Grain and Lyophilized Culture by Yonca Yuceer, İrem Şen Dağ, Buket Güneşer

    Published 2021-09-01
    “…Microbial fermentation of kefir has critical importance on its aromatic profile and sensory attributes as well as its physicochemical parameters. …”
    Get full text
    Article
  4. 324

    Distinguishing physical vs. chemical templating mechanisms for inducing graphitization in novolac matrix by Sandra N Ike, Randy Vander Wal

    Published 2025-04-01
    “…The findings led to two working hypotheses: the additives act as templates that promote matrix aromatic alignment to their basal planes during carbonization (referred to here as physical templating) in addition to forming radical edge sites that bond to the decomposing matrix (referred to here as chemical templating). …”
    Get full text
    Article
  5. 325

    Selective peptide bond formation via side chain reactivity and self-assembly of abiotic phosphates by Arti Sharma, Kun Dai, Mahesh D. Pol, Ralf Thomann, Yi Thomann, Subhra Kanti Roy, Charalampos G. Pappas

    Published 2025-02-01
    “…Furthermore, we demonstrate that a balance between electrostatic and aromatic stacking interactions facilitates covalent self-sorting or co-assembly during oligomerization reactions using unprotected N-terminus aminoacyl phosphate esters. …”
    Get full text
    Article
  6. 326

    Characterization of Metakaolin from Wassa Kaolin and Its Potential as Adsorbent for the Regeneration of Used Engine Lubrication Oil by Ralph Kwakye, Albert Aniagyei, Bright Yaw Vigbedor, Jonathan Osei-Owusu, Bonface Yeboah Antwi, Anthony Selorm Kwesi Amable, George Edusei, Bright Kwakye-Awuah

    Published 2022-01-01
    “…The regenerated oil had 79% saturates, 6% carbon residues, and 18% aromatics compared to the commercial virgin oil, which contained 84% saturates, 5% carbon residue, and 11% aromatics. …”
    Get full text
    Article
  7. 327

    Process-induced toxicants in food: an overview on structures, formation pathways, sensory properties, safety and health implications by Adel Mirza Alizadeh, Mansoureh Mohammadi, Fataneh Hashempour-baltork, Hedayat Hosseini, Fereidoon Shahidi

    Published 2025-01-01
    “…These include acrolein, acrylamide, benzene, ethyl carbamate, chlorinated compounds, heterocyclic organic compounds (HOCs), polycyclic aromatic hydrocarbons (PAHs), heterocyclic aromatic amines (HAAs), biogenic amines (BAs), N-nitrosamines, Maillard reaction products (MRPs), and several newly identified toxicants such as 3-monochloropropane-1,2-diol. …”
    Get full text
    Article
  8. 328

    New semisynthetic α-glucosidase inhibitor from a doubly-chemically engineered extract by María I. Osella, Mario O. Salazar, Carlos M. Solís, Ricardo L. E. Furlan

    Published 2025-01-01
    “…The inhibitor results from the action of the two reagents used on four common functional groups present in natural products (carbonyl, phenol, aromatic carbon, and a double bond). The reactions led to the opening of a 6-member oxygenated heterocycle to produce a 5-member nitrogenated one, as well as the dehydroxylation and fluorination in two different positions of one of the aromatic rings of the natural starting material, all within a complex mixture of natural products. …”
    Get full text
    Article
  9. 329

    Chemical Characterization of Specific Micropollutants from Textile Industry Effluents in Fez City, Morocco by Hakima Talouizte, Mohammed Merzouki, Mohammed Benlemlih, Mohammed Bendriss Amraoui

    Published 2020-01-01
    “…Main groups of chemical compounds detected in these effluents were aromatic carboxylic acids, alkanes, aromatic amines, phthalates, aliphatic carboxylic acids, and linear aliphatic alcohols. …”
    Get full text
    Article
  10. 330

    Synthesis of Novel Azetidinone and Thiazolidinones Derivatives and Evaluation of Their Antimicrobial Efficacy by K. H. Patel, A. G. Mehta

    Published 2006-01-01
    “…This amine on facile condensation with aromatic aldehydes afford Schiff Base/anils/azomethines(2a-h). …”
    Get full text
    Article
  11. 331

    Synthesis and Antibacterial Activity of Chalcones and Pyrimidine-2-ones by A. K. Parekh, K. K. Desai

    Published 2005-01-01
    “…Some new chalcones have been prepared by Claisen-schmidt condensation of ketone and different aromatic aldehydes. These chalcones on condensation with urea in presence of acid gave Pyrimidine-2-ones. …”
    Get full text
    Article
  12. 332

    One-Pot Synthesis and Antimicrobial Activity of Novel α-Aminophosphonates Using TMG by B. Siva Kumar, Y. Haranadha Reddy, C. Radha Rani, G. Chnadra Sekhar Reddy

    Published 2011-01-01
    “…α-Aminophosphonates (4a-j) were synthesized in one-pot simultaneous reaction of 4-bromo-3-methyl benzenamine (1), dimethylphosphite (3) and different aromatic aldehydes (2a-j) by Kabachnik-Fields reaction in the presence of tetramethylguanidine (TMG) (10 mole%) as catalyst in toluene at reflux temperature afforded 4a-j in good yields. …”
    Get full text
    Article
  13. 333

    Effect of Tetrahydrofuran Extraction on Surface Functional Groups of Coking Coal and Its Wettability by Jian Yao, Huaijun Ji, Huazhang Lu, Tongtong Gao

    Published 2019-01-01
    “…Reduction of substitution functional groups and aliphatic hydrocarbon decreased with the side-chains breakage produce more active sites, which increases the degree of condensation of the aromatic ring (I3). The combined action of the decrease of the hydrophilic functional groups and the increase of the hydrophobic functional groups made the wettability of the coking coal become weak.…”
    Get full text
    Article
  14. 334
  15. 335

    Arabidopsis 3‐Deoxy‐d‐Arabino‐Heptulosonate 7‐Phosphate (DAHP) Synthases of the Shikimate Pathway Display Both Manganese‐ and Cobalt‐Dependent Activities by Ryo Yokoyama, Hiroshi A. Maeda

    Published 2025-01-01
    “…ABSTRACT The plant shikimate pathway directs a significant portion of photosynthetically assimilated carbon into the downstream biosynthetic pathways of aromatic amino acids (AAA) and aromatic natural products. 3‐Deoxy‐d‐arabino‐heptulosonate 7‐phosphate (DAHP) synthase (hereafter DHS) catalyzes the first step of the shikimate pathway, playing a critical role in controlling the carbon flux from central carbon metabolism into the AAA biosynthesis. …”
    Get full text
    Article
  16. 336

    L’arbre à Tunis : hypothèses pour une histoire de l’espace public by Myriam Bennour-Azooz, Pierre Donadieu, Taoufik Bettaieb

    Published 2012-07-01
    “…The most often found essences were those mentioned in the Koran for their virtues, mainly citrus and aromatic species (the precepts of divine law used to be obeyed even when it concerned the interiors’organization).Then in the late nineteenth century, during the protectorate, the city expanded beyond the walls. …”
    Get full text
    Article
  17. 337
  18. 338

    Structural basis of a microbial trimethylamine transporter by Chao Gao, Hai-Tao Ding, Kang Li, Hai-Yan Cao, Ning Wang, Zeng-Tian Gu, Qing Wang, Mei-Ling Sun, Xiu-Lan Chen, Yin Chen, Yu-Zhong Zhang, Hui-Hui Fu, Chun-Yang Li

    Published 2025-01-01
    “…TMA can move between different aromatic boxes, which provides the structural basis of TmaT importing TMA. …”
    Get full text
    Article
  19. 339

    An Efficient Synthesis of Tetrahydrobenzo[b]pyran Derivatives Using Sulfonic Acid Functionalized Silica as an Efficient Catalyst by Ghodsi Mohammadi Ziarani, Alireza Abbasi, Alireza Badiei, Zeinab Aslani

    Published 2011-01-01
    “…Tetrahydrobenzo[b]pyran derivatives were efficiently synthesized by the reaction of appropriated aromatic aldehydes, malononitrile and dimedone in the presence of SiO2-Pr-SO3H as a nanoporous and recoverable solid acid catalyst, in good to excellent yields. …”
    Get full text
    Article
  20. 340

    El maracuyá en Florida by Mark Bailey, Ali Sarkhosh, Amir Rezazadeh, Joshua Anderson, Alan Chambers, Jonathan Crane, Jonathan Clavijo-Herrera

    Published 2021-09-01
    “… Passionfruit is a short-lived evergreen perennial vine that produces an aromatic, tropical-tasting fruit. This new 14-page Spanish translation of the UF/IFAS Horticultural Sciences Department provides a description of passionfruit and its various species and cultivars, as well as a guide to culture and management, harvest and storage, its pests and diseases, and food and marketing. …”
    Get full text
    Article