Results 11 to 20 of about 1,136,862 (292)

[1,3]/[1,4]-Sulfur atom migration in β-hydroxyalkylphosphine sulfides

open access: yesBeilstein Journal of Organic Chemistry, 2020
β-Hydroxyalkylphosphine sulfides undergo [1,3]- or [1,4]-sulfur atom phosphorus-to-carbon migration in the presence of Lewis or Brønsted acids. The direction of sulfur atom migration depends on the type of acid used for the reaction. In the presence of a
Katarzyna Włodarczyk   +2 more
doaj   +1 more source

Behaviours of natural organic matter in membrane filtration for surface water treatment : a review [PDF]

open access: yes, 2006
Membrane application in surface water treatment provides many advantages over conventional treatment. However, this effort is hampered by the fouling issue, which restricts its widespread application due to increases in hydraulic resistances, operational
Ismail, A. F.   +2 more
core   +1 more source

Examining Challenges that Students Face in Learning Organic Chemistry Synthesis

open access: yesIJCER (International Journal of Chemistry Education Research), 2020
Organic chemistry is the offered after general chemistry and is the course that many find it challenging and difficult. Synthesis is first introduced in organic chemistry I course and is widely considered as one of the topics in which students struggle ...
Issa I. Salame   +2 more
doaj   +1 more source

Litter Quality of Populus Species as Affected by Free-Air CO2 [PDF]

open access: yes, 2009
The effect of elevated CO2 and nitrogen fertilization on the molecular chemistry of litter of three Populus species and associated soil organic matter (SOM) was investigated by pyrolysis-gas chromatography/mass spectrometry.
Buurman, P., Hoosbeek, M.R., Vermue, E.
core   +7 more sources

High-Throughput Preparation of Antibacterial Polymers from Natural Product Derivatives via the Hantzsch Reaction

open access: yesiScience, 2020
Summary: The Hantzsch and free-radical polymerization reactions were combined in a one-pot high-throughput (HTP) system to simultaneously prepare 30 unique polymers in parallel.
Guoqiang Liu   +7 more
doaj   +1 more source

Methods of Organic Chemistry [PDF]

open access: yesNature, 1954
Methoden der organischen Chemie (Houben–Weyl.) Vierte, vollig neu gestaltete Auflage. Herausgegeben von Eugen Muller, unter besonderer Mitwirkung von O. Bayer, H. Meerwein und K. Ziegler. Band 8: Sauerstoffverbindungen 3, Peroxyde, Kohlensaurederivate, Nitrile und Isonitrile, Carbonsauren, Decarboxylierung, Carbonsaureester, Funktionelle N-Derivate der
openaire   +1 more source

MIANN models in medicinal, physical and organic chemistry [PDF]

open access: yes, 2013
[Abstract] Reducing costs in terms of time, animal sacrifice, and material resources with computational methods has become a promising goal in Medicinal, Biological, Physical and Organic Chemistry. There are many computational techniques that can be used
Arrasate, Sonia   +7 more
core   +2 more sources

Diverse Biological Activity of Benzofuroxan/Sterically Hindered Phenols Hybrids

open access: yesPharmaceuticals, 2023
Combining two pharmacophores in a molecule can lead to useful synergistic effects. Herein, we show hybrid systems that combine sterically hindered phenols with dinitrobenzofuroxan fragments exhibit a broad range of biological activities.
Elena Chugunova   +18 more
doaj   +1 more source

A Perspective on the Synthesis, Purification, and Characterization of Porous Organic Cages [PDF]

open access: yes, 2016
[Image: see text] Porous organic cages present many opportunities in functional materials chemistry, but the synthetic challenges for these molecular solids are somewhat different from those faced in the areas of metal–organic frameworks, covalent ...
Briggs, Michael E, Cooper, Andrew I
core   +1 more source

Sources and Secondary Production of Organic Aerosols in the Northeastern United States during WINTER [PDF]

open access: yes, 2018
Most intensive field studies investigating aerosols have been conducted in summer, and thus, wintertime aerosol sources and chemistry are comparatively poorly understood.
Apel, E. C.   +23 more
core   +2 more sources

Home - About - Disclaimer - Privacy