Results 61 to 70 of about 195,903 (365)

Alternative pathways to α,β-unsaturated ketones via direct oxidative coupling transformation using Sr-doped LaCoO3 perovskite catalyst [PDF]

open access: yesRoyal Society Open Science, 2019
A strontium-doped lanthanum cobaltite perovskite material was prepared, and used as a recyclable and effective heterogeneous catalyst for the direct oxidative coupling of alkenes with aromatic aldehydes to produce α,β-unsaturated ketones.
Khang H. Trinh   +7 more
doaj   +1 more source

Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner   +9 more
wiley   +1 more source

Characterization of an isobutylene epoxide hydrolase (IbcK) from the isobutylene-catabolizing bacterium Mycolicibacterium sp. ELW1

open access: yesApplied and Environmental Microbiology
Isobutylene (IB) is produced on a large scale by the petrochemical industry and is metabolized by the aerobic alkene-metabolizing bacterium Mycolicibacterium sp. ELW1. The initial metabolite of IB catabolism by this bacterium is proposed to be 2-methyl-1,
Nicholas W. Faulkner   +6 more
doaj   +1 more source

Bases of inorganic and organic chemistry [PDF]

open access: yes, 2016
Stated fundamental theoretical principles of general, inorganic and organic chemistry and analyzed the reactivity of the most important classes of inorganic and organic substances. A multivariate tasks and exercises for classroom and independent work are
Alami, D., Slavkova, M., Ved, M.
core  

A Simple Nickel Catalyst Enabling an E‐Selective Alkyne Semihydrogenation [PDF]

open access: yes, 2019
Stereoselective alkyne semihydrogenations are attractive approaches to alkenes, which are key building blocks for synthesis. With regards to the most atom economic reducing agent dihydrogen (H 2 ), only few catalysts for the challenging E ‐selective ...
Kaewmee, Benyapa   +3 more
core   +1 more source

Copper Single‐Atom Decorated Microfibrous Catalysts for Continuous‐Flow Reduction of Nitroarenes

open access: yesAdvanced Functional Materials, EarlyView.
Herein, a Cu‐single‐atom decorated, microfibrous catalyst (Cu1/CMF) is fabricated for chemoselective reduction of nitroarenes, demonstrating a superior processing capacity of 1.92 mmol mgcat−1 h−1 and superior durability (≥ 25 cycles) in a continuous‐flow manner.
Jiahan Zhao   +12 more
wiley   +1 more source

High chemoselectivity in the phenol synthesis

open access: yesBeilstein Journal of Organic Chemistry, 2011
Efforts to trap early intermediates of the gold-catalyzed phenol synthesis failed. Neither inter- nor intramolecularly offered vinyl groups, ketones or alcohols were able to intercept the gold carbenoid species. This indicates that the competing steps of
Matthias Rudolph   +3 more
doaj   +1 more source

Oxalates as Activating Groups for Alcohols in Visible Light Photoredox Catalysis: Formation of Quaternary Centers by Redox-Neutral Fragment Coupling. [PDF]

open access: yes, 2015
Alkyl oxalates are new bench-stable alcohol-activating groups for radical generation under visible light photoredox conditions. Using these precursors, the first net redox-neutral coupling of tertiary and secondary alcohols with electron-deficient ...
Jamison, Christopher R   +4 more
core  

The co-pyrolysis of flame retarded high impact polystyrene and polyolefins [PDF]

open access: yes, 2007
The co-pyrolysis of brominated high impact polystyrene (Br-HIPS) with polyolefins using a fixed bed reactor has been investigated, in particular, the effect that different types brominated aryl compounds and antimony trioxide have on the pyrolysis ...
Bhaskar, T.   +5 more
core   +1 more source

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