Results 21 to 30 of about 3,737,155 (255)

Synthesis of New Oxindoles and Determination of Their Antibacterial Properties

Heteroatom Chemistry, 2020
A versatile method for the synthesis of new oxindoles was developed by the reaction between substituted isatins and 5-aminopyrazoles. The reaction was carried out at room temperature in ethanol using p-toluenesulfonic acid as the catalyst.
Pablo E. Romo, Braulio Insuasty, Rodrigo Abonia, María del Pilar Crespo, Jairo Quiroga   +4 more
doaj   +1 more source

Traceless Redox-Annulations of Alicyclic Amines

SynOpen, 2020
Amines such as 1,2,3,4-tetrahydroisoquinoline undergo redox­-neutral annulations with ortho-(nitromethyl)benzaldehyde. Benzoic­ acid acts as a promoter in these reactions, which involve concurrent amine α-C–H bond and N–H bond functionalization ...
Dillon R. L. Rickertsen, Longle Ma, Anirudra Paul, Khalil A. Abboud, Daniel Seidel   +4 more
doaj   +1 more source

Denitrogenative Transformations of Pyridotriazoles and Related Compounds: Synthesis of N-Containing Heterocyclic Compounds and Beyond.

Journal of Organic Chemistry, 2020
The high demand for new and efficient routes toward synthesis of nitrogen-containing heterocyclic scaffolds has inspired organic chem-ists to discover several methodologies over recent years.
Dongari Yadagiri, Mónica Rivas, V. Gevorgyan   +2 more
semanticscholar   +1 more source

Role of heterocyclic compounds in SARS and SARS CoV-2 pandemic

Bioorganic chemistry (Print), 2020
Coronaviruses have led to severe emergencies in the world since the outbreak of SARS CoV in 2002, followed by MERS CoV in 2012. SARS CoV-2, the novel pandemic caused by coronaviruses that began in December 2019 in China has led to a total of 24066076 ...

semanticscholar   +1 more source

Highly Efficient and Diastereoselective Synthesis of New Pyrazolylpyrrolizine and Pyrazolylpyrrolidine Derivates by a Three-Component Domino Process

Molecules, 2014
Diastereoselective reactions between 4-formylpyrazoles, N-substituted maleimides and glycine derivates led to new series of pyrazolyldipyrrolo [3,4-a:3',4'-f]pyrrolizines and pyrazolylpyrrolo[3,4-c]pyrroles in good yields.
Jairo Quiroga, Jaime Gálvez, Rodrigo Abonia, Braulio Insuasty, Alejandro Ortíz, Justo Cobo, Manuel Nogueras   +6 more
doaj   +1 more source

Triazine: An Important Building Block of Organic Materials for Solar Cell Application

Molecules, 2022
Since the beginning of the 21st century, triazine-based molecules have been employed to construct different organic materials due to their unique optoelectronic properties. Among their applications, photovoltaics stands out because of the current need to
Valeria Dávila Cerón, Luis Alberto Illicachi, Braulio Insuasty   +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

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

Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid

International Journal of Industrial Chemistry, 2019
The corrosion inhibition of mild steel in 0.5 M hydrochloric acid by six synthesized heterocyclic compounds was studied using weight loss measurements. The inhibition efficiency exceeded 95%.
Salima K. Ahmed, W. Ali, A. Khadom
semanticscholar   +1 more source

Microwave-Assisted Synthesis of Novel Pyrazolo[3,4-g][1,8]naphthyridin-5-amine with Potential Antifungal and Antitumor Activity

Molecules, 2015
The microwave assisted reaction between heterocyclic o-aminonitriles 1 and cyclic ketones 2 catalyzed by zinc chloride led to new series of pyrazolo[3,4-b] [1,8]naphthyridin-5-amines 3 in good yields.
Paola Acosta, Estefanía Butassi, Braulio Insuasty, Alejandro Ortiz, Rodrigo Abonia, Susana A. Zacchino, Jairo Quiroga   +6 more
doaj   +1 more source