Results 131 to 140 of about 26,006 (279)
The efficient electrochemical synthesis of iodinated carbonyl compounds, valuable building blocks, is reported. The method relies on the controlled generation of electrophilic iodine species from simple and inexpensive iodide salts under mild electrochemical conditions, enabling excellent compatibility with aldehydes bearing sensitive functional groups.
Biswadeep Manna +6 more
wiley +1 more source
Chiral (Stereoselective) Drugs, Asymmetric Synthesis, and Racemic Resolution Methods
Chirality is crucial in drug development since both biological targets in the organism and the majority of pharmaceutical compounds are chiral. The synthesis and resolution of chiral compounds are critical steps while developing chiral drugs. Asymmetric synthesis and racemic resolution are the two most common methods for obtaining enantiopure drugs ...
Burcu Karayavuz +1 more
wiley +1 more source
a-Hidroxilação de compostos 1,3-dicarbonilados: síntese da harzialactona e de y-lactonas análogas [PDF]
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2015.Neste trabalho, foi desenvolvida uma metodologia simples para realizar a ?-hidroxilação ...
Peterle, Marcos Maragno
core
A practical and straightforward approach to optically active erythro 3‐amino‐2‐hydroxy acids and its application to the enantioselective synthesis of 3‐phenylisoserine and of the marine natural product 3‐amino‐2‐hydroxy‐6‐methylheptanoic acid is reported.
Marilena Caporale +4 more
wiley +1 more source
Summary Nonphotochemical quenching (NPQ) mechanisms fine‐tune light utilisation in the photosynthetic antenna, for example, in response to excess light, to prevent photodamage. NPQ comprises distinct mechanisms, all contributing to photoprotection but acting on different time scales.
Olga Blifernez‐Klassen +6 more
wiley +1 more source
Epoxidation of propylene on NaCl-modified silver catalysts with air as the oxidant
Propylene epoxidation by air was carried out on NaCl-modified silver (NaCl/Ag) catalysts, and the catalysts were characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The effects of NaCl loadings, propylene to oxygen ratio,
Lu, JQ, Luo, MF, Lei, H, Li, C
core
StyA1 and StyA2B from Rhodococcus opacus 1CP: a Multifunctional Styrene Monooxygenase System
Two-component flavoprotein monooxygenases are emerging biocatalysts that generally consist of a monooxygenase and a reductase component. Here we show that Rhodococcus opacus 1CP encodes a multifunctional enantioselective flavoprotein monooxygenase system
Groning, J.A.D. +12 more
core +1 more source
The intramolecular nitrile oxide olefin [3 + 2]‐cycloaddition offers a reliable entry toward 2‐aza‐bicyclo[4.3.0]‐nonanes, a substructure found in several bioactive piperidine alkaloids. The required oxime precursors were prepared in non‐racemic form by Ir‐catalyzed asymmetric allylation and ring‐closing metathesis.
Alicia Köcher +5 more
wiley +1 more source
This study investigates the kinetic and thermodynamic aspects of hemp oil epoxidation, using an ion exchange resin catalyst for in-situ peracid generation.
Elham Nadim +6 more
doaj +1 more source
The effects of ligand ring size and peripheral substitution on geometric and electronic structures as well as electrochemical and spectroscopic properties of a family of iron(II) complexes with macrocyclic tetracarbene ligands, often called organometallic heme analogues, have been analyzed, to provide structure/property correlations as a basis for ...
Isabelle Becker +7 more
wiley +1 more source

