Results 21 to 30 of about 2,226,317 (267)

Ammonia–Borane-Mediated Reduction of Nitroalkenes

SynOpen, 2020
Ammonia borane (AB) has been successfully employed in the reduction of nitroalkenes. A variety of nitrostyrenes and alkyl-substituted­ nitroalkenes were chemoselectively reduced to the corresponding nitroalkanes, in short reaction time, with an atom ...
Chiara Faverio, Monica Fiorenza Boselli, Laura Raimondi, Maurizio Benaglia   +3 more
doaj   +1 more source

Multicomponent synthesis of new bis(pyranpyrazole) and their antimicrobial-antioxidant evaluations [PDF]

Journal of the Serbian Chemical Society, 2019
One-pot, three-component reactions were utilized to obtain a series of new symmetrical bis(pyranopyrazoles) built around six rigid linkers in good yields and in the short durations under normal conditions.
Yusuf Mohamad, Thakur Saloni
doaj   +1 more source

Atom- and step-economic synthesis of biaryl-substituted furocoumarins, furoquinolones and furopyrimidines by multicomponent reactions and one-pot synthesis

Green Processing and Synthesis, 2013
Atom-efficient multicomponent reactions (MCR) and step-efficient one-pot synthesis are developed for the synthesis of biaryl-substituted furocoumarins, furoquinolones, and furopyrimidines.
Kadam Asha, Bellinger Stephanie, Zhang Wei   +2 more
doaj   +1 more source

Catalyst-Free Polymerization with 100% Atom Economy: Facile Synthesis of Polysulfonates with Multifunctionalities [PDF]

, 2020
Catalyst-free spontaneous polymerization for the synthesis of halogen-rich polysulfonates at room temperature in air with 100% atom economy in high yields was developed. The resulting polymers possess various properties, including post-functionalization,
Ben Zhong, Tang, YUBING, HU, Ryan, Tsz Kin Kwok, XIAOLIN, LIU, Xin, Liang, Jacky W. Y., Lam, Lei, Han, Qing, Qu, Dongming, Liu, Haotian, Bai, Anjun, Qin   +10 more
core   +1 more source

Assessment of Sustainability Indicators for Biodiesel Production

Applied Sciences, 2017
Biodiesel production may provide a sustainable route to reduce environmental pollution caused by fossil fuel consumption. In order to minimize environmental impacts of biodiesel production, the chemical process should be optimized to minimize waste ...
Edith Martinez-Guerra, Veera Gnaneswar Gude   +1 more
doaj   +1 more source

Inserção do conceito de economia atômica no programa de uma disciplina de química orgânica experimental Inclusion of atom economy concept in an experimental organic chemistry undergraduate course

Química Nova, 2003
In this paper, the atom economy concepts are applied in a series of experiments during an experimental organic chemistry class, to implement "green chemistry" in an undergraduate course.
Leila Maria Oliveira Coelho Merat, Rosane Aguiar da Silva San Gil   +1 more
doaj   +1 more source

Síntese orgânica limpa Clean organic synthesis

Química Nova, 2000
An introduction to the fundamental concepts and main aspects of organic clean synthesis is given, and relevant industrial examples which have implemented the philosophy of cleaner synthesis are also presented. Recent trends in organic synthesis which are
Antonio Manzolillo Sanseverino
doaj   +1 more source

Hindered aryl bromides for regioselective palladium-catalysed direct arylation at less favourable C5-carbon of 3-substituted thiophenes

Beilstein Journal of Organic Chemistry, 2014
The use of the congested aryl bromide 2-bromo-1,3-dichlorobenzene as coupling partner allows to modify the regioselectivity of the arylation of 3-substituted thiophene derivatives in favour of carbon C5.
Rongwei Jin, Charles Beromeo Bheeter, Henri Doucet   +2 more
doaj   +1 more source

Catalyst-Solvent System for PASE Approach to Hydroxyquinolinone-Substituted Chromeno[2,3-b]pyridines Its Quantum Chemical Study and Investigation of Reaction Mechanism

Molecules, 2020
The Pot, Atom, and Step Economy (PASE) approach is based on the Pot economy principle and unites it with the Atom and Step Economy strategies; it ensures high efficiency, simplicity and low waste formation.
Fedor V. Ryzhkov, Yuliya E. Ryzhkova, Michail N. Elinson, Stepan V. Vorobyev, Artem N. Fakhrutdinov, Anatoly N. Vereshchagin, Mikhail P. Egorov   +6 more
doaj   +1 more source

Design of microcavity resonators for single-atom detection [PDF]

, 2007
Whispering gallery modes of a microdisk resonator are useful for the optical detection of single rubidium and cesium atoms near the surface of a substrate. Light is coupled into two high-Q whispering-gallery modes of the disk which can provide attractive
Rosenblit, Michael, Fleminger, Eyal, Horak, Peter, Japha, Yonathan, Folman, Ron   +4 more
core   +1 more source