Results 1 to 10 of about 75,161 (145)

Optimization of green and environmentally-benign synthesis of isoamyl acetate in the presence of ball-milled seashells by response surface methodology

Scientific Reports, 2023
Ball-milled seashells, as a nano-biocomposite catalyst and natural source of CaCO3 in its aragonite microcrystalline form with fixed CO2, was optimized for the synthesis of isoamyl acetate (3-methylbutyl ethanoate) by response surface methodology with a ...
Amir Hossein Fattahi, Mohammad G. Dekamin, James H. Clark   +2 more
doaj   +1 more source

Enhancing Sorghum Productivity with Methyur, Kamethur, and Ivin Plant Growth Regulators ^†

Biology and Life Sciences Forum, 2023
Sorghum is one of the most important foods, fodder, and technical crops grown in the world. Global climate change and environmental pollution with toxic industrial and agricultural waste are the most unfavorable environmental factors affecting the growth
Victoria Anatolyivna Tsygankova, Iryna Valeriivna Voloshchuk, Stepan Hryhorovych Pilyo, Svitlana Viktorivna Klyuchko, Volodymyr Serhiyovych Brovarets   +4 more
doaj   +1 more source

Using Quinolin-4-Ones as Convenient Common Precursors for a Metal-Free Total Synthesis of Both Dubamine and Graveoline Alkaloids and Diverse Structural Analogues

Molecules
The Rutaceae family is one of the most studied plant families due to the large number of alkaloids isolated from them with outstanding biological properties, among them the quinoline-based alkaloids Graveoline 1 and Dubamine 2.
Rodrigo Abonia, Lorena Cabrera, Diana Arteaga, Daniel Insuasty, Jairo Quiroga, Paola Cuervo, Henry Insuasty   +6 more
doaj   +1 more source

Optimization of preparation process of butyl rubber latex

Hecheng xiangjiao gongye, 2023
The butyl rubber（IIR）latex with good stablility was preparated by solution-emulsion method using IIR as raw material. And the effects of emulsifier type, emulsifier composition, pH value, mass ratio of oil to water and concentration process on ...
ZHANG Le，LI Hui，ZHU Ting-chun，LI Jian-ye，LI Bin
doaj   +1 more source

Ultrasound-assisted green synthesis of 1,4-disubstituted 1,2,3-triazoles using natural polymer supports

Scientific Reports
The advent of click chemistry has significantly accelerated the synthesis of 1,2,3-triazoles, key structures found in numerous biologically active and pharmaceutical compounds.
Khatereh Haseli, Maryam Esmkhani, Shahrzad Javanshir   +2 more
doaj   +1 more source

Magnetic decorated 5-sulfosalicylic acid grafted to chitosan: A solid acid organocatalyst for green synthesis of quinazoline derivatives

Carbohydrate Polymer Technologies and Applications
In this research, a new magnetically decorated multifunctional solid acid was designed and prepared conveniently by grafting of 5-sulfosalicylic acid (SSA) onto the chitosan (CS) backbone using toluene-2,4-diisocyanate (TDI) linker for the first time ...
Reyhaneh Peyvasteh Sourkouhi, Mohammad G. Dekamin, Ehsan Valiey, Mohammad Dohendou   +3 more
doaj   +1 more source

Synthesis of novel [1,2,4]triazolo[1,5-b][1,2,4,5]tetrazines and investigation of their fungistatic activity

Beilstein Journal of Organic Chemistry, 2022
A series of novel [1,2,4]triazolo[1,5-b][1,2,4,5]tetrazines has been synthesized through oxidation reaction of the corresponding 3,6-disubstituted 1,2,4,5-tetrazines bearing amidine fragments.
Anna V. Korotina, Svetlana G. Tolshchina, Rashida I. Ishmetova, Natalya P. Evstigneeva, Natalya A. Gerasimova, Natalya V. Zilberberg, Nikolay V. Kungurov, Gennady L. Rusinov, Oleg N. Chupakhin, Valery N. Charushin   +9 more
doaj   +1 more source

Uso de una mezcla dioxane/MeOH/NaBH4 en caliente como un medio conveniente para la reducción química selectiva del doble enlace C=C en sistemas α,β-insaturados

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2021
Productos de Knoevenagel diversamente sustituidos fueron sometidos a reducción con una solución de NaBH4 en MeOH/p-dioxano a 70 oC. A través de este proceso, se alcanzó la reducción selectiva de sus dobles enlaces C=C en todos los casos. Las condiciones
Rodrigo Abonia, Andres C. García
doaj   +1 more source

Colchiceine Complexes with Lithium, Sodium and Potassium Salts − Spectroscopic Studies

Croatica Chemica Acta, 2016
Colchiceine complexes with Li+, Na+ and K+ cations have been synthesized and studied by 1H and 13C NMR, FT-IR, FAB MS and UV-Vis. It has been shown that colchiceine forms stable complexes especially with lithium cation and the most stable structures of ...
Joanna Kurek, Piotr Barczyński
doaj   +1 more source

Preparation of magnetic decorated polyacrylonitrile-grafted chitosan as a new bio-inspired nanocatalyst for the synthesis of dihydropyrano[2,3-c]pyrazole and 2-amino-3-cyano-4H-pyran derivatives

Scientific Reports
This research reports a novel magnetized polyacrylonitrile-modified chitosan (CS-g-PAN/Fe3O4) nanomaterial, as a heterogeneous catalyst, for multicomponent reactions (MCRs). Appropriate characterization using techniques such as Fourier transform infrared
Niloufar Nashibi, Mohammad G. Dekamin, Ali Maleki   +2 more
doaj   +1 more source