Results 131 to 140 of about 21,852 (266)

Quantifying the Dynamics of Pesticides in Natural Waters

CHIMIA, 1997
A variety of trace analytical methods (solid-phase and liquid-liquid extraction, HPLC and GC-MS) for quantitatively assessing the input and behavior of pesticides and their metabolites (i.e., triazines, acetamides, phenoxy acids and organotin ...
Stephan R. Müller
doaj   +2 more sources

Bench‐Stable Boryl Thianthrenium Dication Enables Aziridinyl Boronate Synthesis via Metal‐Free Late‐Stage Aziridination with Diverse Nitrogen Nucleophiles

Angewandte Chemie, Volume 138, Issue 4, 22 January 2026.
A bench‐stable boryl thianthrenium dication is synthesized via thianthrenation of vinyl MIDA boronate. This novel dication enables metal‐free, chemo‐, and diastereoselective late‐stage aziridination with diverse nitrogen nucleophiles. The strategic significance is further showcased by one‐pot electrochemical and asymmetric protocols and versatile ...
Veerabhadra R. Vulupala, Disni Gunasekera, Nagarjun R. Mallampudi, Ramy Yousef, Yusif I. Gyasi, Gopal R. Ramidi, Ifeoluwa Adedotun, Shiqing Xu   +7 more
wiley   +2 more sources

Convergent synthesis of new N -substituted 2-{[5-(1H -indol-3-ylmethyl)-1,3,4-oxadiazol-2-yl]sulfanyl}acetamides as suitable therapeutic agents

Brazilian Journal of Pharmaceutical Sciences, 2015
A series of N-substituted 2-{[5-(1H-indol-3-ylmethyl)-1,3,4-oxadiazol-2-yl]sulfanyl}acetamides (8a-w) was synthesized in three steps. The first step involved the sequential conversion of 2-(1H-indol-3-yl)acetic acid (1) to ester (2) followed by hydrazide
Kaniz Rubab, Muhammad Athar Abbasi, Aziz-ur-Rehman, Sabahat Zahra Siddiqui, Muhammad Ashraf, Ayesha Shaukat, Irshad Ahmad, Muhammad Arif Lodhi, Farman Ali Khan, Muhammad Shahid, Muhammad Nadeem Akhtar   +10 more
doaj   +1 more source

Chromatography of wine [PDF]

, 2013
The objectives of the review are the collection, concise description and evaluation of the various chromatographic technologies applied for the separation and quantitative determination of macro- and microcomponents present in ...
Cserháti, Tibor, Szőgyi, Mária
core  

Identification of a novel link connecting indole‐3‐acetamide with abscisic acid biosynthesis and signaling

New Phytologist, Volume 249, Issue 5, Page 2452-2466, March 2026.
Summary Plants orchestrate their developmental processes and responses to environmental stimuli through a sophisticated network of small signaling molecules, termed phytohormones. Among these, auxins are recognized for their role in promoting plant growth.
José Moya‐Cuevas, Paloma Ortiz‐García, Adrián González Ortega‐Villaizán, Irene Viguera‐Leza, Andrés Pérez‐González, Javier Paz‐Ares, Carlos Alonso‐Blanco, Jesús Vicente‐Carbajosa, Stephan Pollmann   +8 more
wiley   +1 more source

Three-Component Reaction of 3-Arylidene-3H-Indolium Salts, Isocyanides, and Alcohols

Frontiers in Chemistry, 2019
A novel isocyanide-based multicomponent synthesis of alkyl aryl(indol-3-yl)acetimidates has been established. Starting from aryl(indol-3-yl)methylium tetrafluoroborates, aromatic isocyanides and alcohols, the imidates were obtained in moderate to very ...
Nikita E. Golantsov, Hung M. Nguyen, Alexandra S. Golubenkova, Alexey V. Varlamov, Erik V. Van der Eycken, Erik V. Van der Eycken, Leonid G. Voskressensky   +6 more
doaj   +1 more source

Organic synthesis using (diacetoxyiodo)benzene (DIB): Unexpected and novel oxidation of 3-oxo-butanamides to 2,2-dihalo-N-phenylacetamides

Beilstein Journal of Organic Chemistry, 2012
A novel and reliable method for the direct preparation of 2,2-dihalo-N-phenylacetamides is reported. The key transformation involves the cleavage of a carbon–carbon bond in the presence of DIB and a Lewis acid as the halogen source, and thus this method ...
Wei-Bing Liu, Cui Chen, Qing Zhang, Zhi-Bo Zhu   +3 more
doaj   +1 more source

FARM-LEVEL EFFECTS OF ADOPTING HERBICIDE-TOLERANT SOYBEANS IN THE U.S.A. [PDF]

This paper estimates the on-farm impacts of adopting herbicide-tolerant soybean on herbicide use, yields, and farm profits, using an econometric model that corrects for self-selection and simultaneity and is consistent with profit maximization. The model
Fernandez-Cornejo, Jorge, Jans, Sharon, Klotz-Ingram, Cassandra   +2 more
core   +1 more source

Quad‐SPIM: A High‐Speed, Multi‐Color Light‐Sheet Microscope for 3D Imaging of Large Cleared Human Brain Tissues

Laser &Photonics Reviews, Volume 20, Issue 3, 5 February 2026.
A high‐speed, multi‐color light‐sheet microscope, named quad‐SPIM, enables rapid three dimensional (3D) imaging of large cleared human brain samples with simultaneous four‐channel acquisition. This custom‐built system achieves subcellular resolution across centimeter‐scale volumes, maintaining high image quality.
Laura Perego, Franco Cheli, Samuel Bradley, Danila Di Meo, Luca Giannoni, Josephine Ramazzotti, Federica Fenizi Caria, Giuseppe Sancataldo, Michele Sorelli, Giacomo Mazzamuto, Irene Costantini, Francesco Saverio Pavone   +11 more
wiley   +1 more source

Synthesis of 4-styrylquinazolines enabled by a hypervalent iodine-promoted oxidative amination cascade

Tetrahedron Chem
Efficient synthetic routes to pharmaceutically important 4-styrylquinazolines scaffolds are of considerable interest. Herein, we report a concise synthesis of 4-styrylquinazoline derivatives via a hypervalent iodine-promoted oxidative amination cascade ...
Lipeng Long, Ziyi Yu, Ziwen Huang, Min Ye, Wenjun Luo, Xunjin Jiang, Zhengwang Chen, Zhong-Xia Wang   +7 more
doaj   +1 more source