Results 11 to 20 of about 101,033 (289)

Synthesis of Polyhedral Borane Cluster Fused Heterocycles via Transition Metal Catalyzed B-H Activation

open access: yesMolecules, 2020
Aromatic heterocycles are ubiquitous building blocks in bioactive natural products, pharmaceutical and agrochemical industries. Accordingly, the carborane-fused heterocycles would be potential candidates in drug discovery, nanomaterials ...
Ke Cao   +7 more
doaj   +1 more source

Diquaternary Ammonium Compounds in Zeolite Synthesis: Cyclic and Polycyclic N-Heterocycles Connected by Methylene Chains [PDF]

open access: yes, 2009
An additional dimension has been added to our long-standing studies in high silica zeolite synthesis via a guest/host synergism. We have created and studied the impact of making symmetric diquaternary ammonium compounds, by varying the chain length ...
Burton, Allen W.   +3 more
core   +1 more source

Aegle marmelos phytochemical stabilized synthesis and characterization of ZnO nanoparticles and their role against agriculture and food pathogen

open access: yesGreen Processing and Synthesis, 2019
Nature and nanotechnology have not yet achieved a lucid correlation in the field of science but together they have exhibited immense potential towards the advancement and modification in future science and technology.
Fowsiya J.   +7 more
doaj   +1 more source

How Not to Discover a New Reagent. The Evolution and Chemistry of Woollins' Reagent [PDF]

open access: yes, 2012
The pathways in research can be complex. This review provides a personal account of the winding scientific and funding road that led to Woollins' reagent.
Woollins, J. Derek
core   +1 more source

N‐Heterocyclic Carbenes [PDF]

open access: yesEuropean Journal of Inorganic Chemistry, 2009
The N-heterocyclic carbenes (NHC) now hold a preferred-ligand status in organic and organometallic chemistry. Their role in catalysis continues to grow. When the editorial staff at the Beilstein Journal of Organic Chemistry contacted me to act as a guest editor for the thematic series “N-Heterocyclic carbenes”, I was more than happy to accept what ...
openaire   +3 more sources

Microwave Assisted Synthesis of Indole Substituted Alkenes Using Knoevenagel Condensation Reaction and their Antibacterial Activity Study

open access: yesE-Journal of Chemistry, 2010
The reaction rate of Knoevenagel condensation can be dramatically enhanced by irradiating the reaction mixture containing an aldehyde, active methylene compound, L-proline and chlorobenzene with a commercial microwave oven.
Shubha Jain   +3 more
doaj   +1 more source

An electron-deficient triosmium cluster containing the thianthrene ligand: Synthesis, structure and reactivity of [Os₃(CO)₉(μ3-η2-C₁₂H₇S₂)(μ-H)] [PDF]

open access: yes, 2008
Reaction of [Os₃(CO)₁₀(CH₃CN)₂] with thianthrene at 80 °C leads to the nonacarbonyl dihydride compound [Os₃(CO)₉(μ-3,4-η²-C₁₂H₆S₂)(μ-H)₂] (1) and the 46-electron monohydride compound [Os₃(CO)₉(μ₃-η²-C₁₂H₇S₂)(μ-H)] (2).
Hassan, Mohammad R.   +7 more
core   +1 more source

Azides in the Synthesis of Various Heterocycles

open access: yesMolecules, 2022
In this review, we focus on some interesting and recent examples of various applications of organic azides such as their intermolecular or intramolecular, under thermal, catalyzed, or noncatalyzed reaction conditions.
AbdElAziz A. Nayl   +8 more
doaj   +1 more source

Synthesis of Nitroxide-Annulated Carbocycles and Heterocycles [PDF]

open access: yes, 2012
New, pyrroline nitroxide annulated lactones, polycycles, and maleimide were synthesized by classical and microwave-assisted methodology. We report the application of the metathesis reaction in the presence of nitroxide yielding a pyrroline nitroxide ...
Berente, Zoltán   +4 more
core   +1 more source

Heterocycles Synthesis at Carbonylation of Acetylenic Compounds

open access: yesEurasian Chemico-Technological Journal, 2003
The carbonylation of unsaturated hydrocarbons, alcohols, organic halides and other substrates catalyzed by transition metals, salts of transition metals and organometallic complexes is a wide used synthesis method of new carbonyl, carboxyl and alkoxy ...
S.A. Vizer, K.B. Yerzhanov
doaj   +1 more source

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