Results 51 to 60 of about 367,010 (217)

Spectrophotometric Determination of Chloramphenicol in Pharmaceutical Formulations by Diazotization and Coupling Reaction [PDF]

Kirkuk Journal of Science
Chloramphenicol (CAP), a broad-spectrum antibiotic, was quantitatively analyzed in various pharmaceutical formulations using a rapid and sensitive spectrophotometric method, with the characterization via Fourier-transform infrared (FTIR) spectroscopy ...
Vian Ismail, sawza Mohammed, Mohammed Fars, Malika Haji, Mohammed Esmail, Lavan Mohammad, Rezdar Abdulfatah, Rayan Jalil   +7 more
doaj   +1 more source

A DFT Study on Fe^I/Fe^II/Fe^III Mechanism of the Cross-Coupling between Haloalkane and Aryl Grignard Reagent Catalyzed by Iron-SciOPP Complexes

Molecules, 2020
To explore plausible reaction pathways of the cross-coupling reaction between a haloalkane and an aryl metal reagent catalyzed by an iron–phosphine complex, we examine the reaction of FeBrPh(SciOPP) 1 and bromocycloheptane employing density functional ...
Akhilesh K. Sharma, Masaharu Nakamura
doaj   +1 more source

Stationary Multiple Spots for Reaction-Diffusion Systems

, 2007
In this paper, we review analytical methods for a rigorous study of the existence and stability of stationary, multiple spots for reaction-diffusion systems.
Winter, M, Juncheng Wei, Matthias Winter, Wei, J   +3 more
core   +1 more source

A concise synthesis of 3-(1-alkenyl)isoindolin-1-ones and 5-(1-alkenyl)pyrrol-2-ones by the intermolecular coupling reactions of N-acyliminium ions with unactivated olefins

Beilstein Journal of Organic Chemistry, 2012
A concise synthesis of 3-(1-alkenyl)isoindolin-1-ones and 5-(1-alkenyl)pyrrol-2-ones has been achieved by the coupling reactions of N-acyliminium ions produced from 3-hydroxyisoindol-1-ones or 5-hydroxy-1-pyrrol-2-ones with unactivated olefins in the ...
Nianhong Lu, Lihong Wang, Zhanshan Li, Wei Zhang   +3 more
doaj   +1 more source

Mechanistic Implications for the Ni(I)-Catalyzed Kumada Cross-Coupling Reaction

Inorganics, 2017
Herein we report on the cross-coupling reaction of phenylmagnesium bromide with aryl halides using the well-defined tetrahedral Ni(I) complex, [(Triphos)NiICl] (Triphos = 1,1,1-tris(diphenylphosphinomethyl)ethane).
Linda Iffland, Anette Petuker, Maurice van Gastel, Ulf-Peter Apfel   +3 more
doaj   +1 more source

Transition Metal Catalyzed Hiyama Cross-Coupling: Recent Methodology Developments and Synthetic Applications

Molecules, 2022
Hiyama cross-coupling is a versatile reaction in synthetic organic chemistry for the construction of carbon–carbon bonds. It involves the coupling of organosilicons with organic halides using transition metal catalysts in good yields and high ...
Rida Noor, Ameer Fawad Zahoor, Muhammad Irfan, Syed Makhdoom Hussain, Sajjad Ahmad, Ali Irfan, Katarzyna Kotwica-Mojzych, Mariusz Mojzych   +7 more
doaj   +1 more source

Heteroaromatic Thioether−Organostannane Cross-Coupling

, 2016
Heteroaromatic thioethers and aryl, heteroaryl, and alkenylstannanes participate in a palladium-catalyzed, copper(I)-mediated cross-coupling reaction at 50 °C in ...
Masahiro Egi (1923556), Lanny S. Liebeskind (1867210)   +1 more
core   +1 more source

Biogenic palladium nanostructures for Suzuki-Miyaura and Sonogashira cross-coupling reaction under mild reaction conditions

Current Research in Green and Sustainable Chemistry, 2022
Biogenic palladium nanostructures (NS) are synthesized by utilising pomegranate peels which are generally considered as agro-wastes. A simple methodology without the use of external reducing agent has been applied to achieve uniform flowerlike ...
Sameeran Kumar Das, Anindita Dewan, Pangkita Deka, Rakhee Saikia, Sanjib Thakuria, R.C. Deka, Ashim J. Thakur, Utpal Bora   +7 more
doaj   +1 more source

Cross-Coupling Reaction with Lithium Methyltriolborate

Molecules, 2012
We newly developed lithium methyltriolborate as an air-stable white solid that is convenient to handle. The good performance of this triolborate for metal-catalyzed bond-forming reactions was demonstrated in palladium-catalyzed cross-coupling reactions ...
Norio Miyaura, Hajime Ito, Yasunori Yamamoto, Kazuya Ikizakura   +3 more
doaj   +1 more source

Estudos cenéticos da reação de heck intramolecular catalisada por nanopartículas bimetálicas estabilizadas por polietilenoimina linear funcionalizada [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-graduação em Química, Florianópolis, 2013Reações de acoplamento C-C tem grande destaque na síntese de novos compostos orgânicos, em
Faggion Junior, Deonildo
core