Results 61 to 70 of about 16,857 (213)
Kinetic Resolution in Asymmetric Epoxidation using Iminium Salt Catalysis [PDF]
, 2013 The first reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are described, providing up to 99% ee in the epoxidation of racemic cis ...
Allin, Steven M. +7 more
core +1 more source
ChemistryOpen, Volume 15, Issue 4, April 2026.In organic synthesis, deep eutectic solvents (DES) have demonstrated their ability to be used as reaction media for the development of reactions in line with green chemistry principles. This review presents an overview of microwave‐assisted organic synthesis in DES, highlighting the diversity of uses for these solvents, their role in mechanisms, the ...
Pierre‐Olivier Delaye +2 more
wiley +1 more source
An Efficient and Rapid Synthetic Route to Biologically Interesting Pyranochalcone Natural Products
Molecules, 2007 An efficient and concise total synthesis of naturally occurring pyranochalcones was achieved from readily available 2,4-dihydroxyacetophenone and 2,4-dihydroxy-6- methoxyacetophenone. The key steps in the synthetic strategy were ethylenediamine diacetate-
Likai Xia, Xue Wang, Yong Rok Lee
doaj +1 more source
Spiropyran modified PDMS micro-fluidic chip device for photonically controlled sensor array detection of metal ions [PDF]
, 2009 Micro‐fluidic chips are particularly attractive in biological and life sciences for analytical purposes because they provide a convenient small platform for rapid analysis and detection [1].
Benito-Lopez, Fernando +5 more
core
Metal-mediated intramolecular hydroamination and hydro(acy)alkoxylation reactions [PDF]
, 2012 This PhD thesis describes work undertaken to effect asymmetric catalysis in hydroamination and hydro(acy)alkoxylation reactions of allenes. The introductory Chapter provides an overview of recent advances in asymmetric heterofunctionalisation reactions ...
Arbour, Jannine Louise +1 more
core +1 more source
2-(2,6-Dimethoxyphenyl)-5-hydroxy-7-methoxy-4H-1-benzopyran-4-one
Acta Crystallographica Section E, 2009 In the title compound, C18H16O6, the dimethoxyphenyl ring is rotated by 61.8 (1)° from the plane of the benzopyran system. The molecule is stabilized by an intramolecular O—H...O hydrogen bond.
R. Ravi Kumar +4 more
doaj +1 more source
Photorelease of amino acids from novel thioxobenzo[f]benzopyran ester conjugates [PDF]
, 2011 Aiming at the enhancement of the performance of (9-methoxy-3-oxo-3H-benzo[f]benzopyran-1-yl) methyl ester as photocleavable protecting group for the carboxylic acid function at long-wavelengths, 9-methoxy-3-thioxo-3H-benzo[f]benzopyran-L-valine and L ...
Costa, Susana P. G. +3 more
core +1 more source
Archiv der Pharmazie, Volume 359, Issue 3, March 2026.Chromone‐based derivatives were synthesized and evaluated for selective inhibition of tumor‐associated carbonic anhydrases IX and XII. Structure–activity relationships, docking studies, and ADMET profiling revealed promising candidates with selective tumoral isoform inhibition, supporting their potential as anticancer leads. ABSTRACT A small library of
Lisa Sequeira +13 more
wiley +1 more source
Crystal structure of 4-azido-methyl-6-isopropyl-2H-chromen-2-one [PDF]
, 2015 In the title mol-ecule, C13H13N3O2, the benzo-pyran ring system is essentially planar, with a maximum deviation of 0.017 (1) Å. In the crystal, weak C-H⋯O hydrogen bonds link mol-ecules into ladders along [010].
Krishnamurthy, M.S. +3 more
core +1 more source
Chemistry &Biodiversity, Volume 23, Issue 3, March 2026.ABSTRACT Propolis is a polyphenol‐rich natural resin with well‐documented antioxidant activity; however, its practical application is restricted by poor aqueous solubility and limited stability. Herein, propolis‐based organic–inorganic hybrid nanoflowers (Prp‐Nfs) were synthesized by integrating a propolis extract into a Cu3(PO4)2·3H2O matrix under ...
Cevahir Altinkaynak, Fatih Kirmizikar
wiley +1 more source