The antioxidant activity of coumarins and flavonoids

G Borges Bubols, D da Rocha Vianna… - Mini reviews in …, 2013 - ingentaconnect.com
Coumarins and flavonoids are heterocyclic molecules that have been associated with
beneficial effects on human health, such as reducing the risk of cancer, diabetes …

Green chemistry approaches to the synthesis of coumarin derivatives

M Molnar, M Lončarić, M Kovač - Current organic chemistry, 2020 - ingentaconnect.com
This review is a compilation of the green synthetic methods used in the synthesis of
coumarin derivatives. Coumarins are a class of compounds with a pronounced wide range …

Pechmann reaction in the synthesis of coumarin derivatives

MM Heravi, S Khaghaninejad, M Mostofi - Advances in heterocyclic …, 2014 - Elsevier
The Pechmann reaction introduces one of the most significant and simple methods for the
synthesis of a variety of heterocyclic compounds, particularly coumarin derivatives. In 1883 …

Synthesis of coumarins via Pechmann reaction catalyzed by 3-methyl-1-sulfonic acid imidazolium hydrogen sulfate as an efficient, halogen-free and reusable acidic …

NG Khaligh - Catalysis Science & Technology, 2012 - pubs.rsc.org
3-Methyl-1-sulfonic acid imidazolium hydrogen sulfate has been used as an acidic task-
specific ionic liquid for Pechmann condensation reaction. The coumarin products could …

Liquid-crystalline coumarin derivatives: contribution to the tailoring of metal-free sensitizers for solar cells

AA Merlo, A Tavares, S Khan, MJ Leite Santos… - Liquid …, 2018 - Taylor & Francis
Coumarins have been used in a wide range of applications, such as dye-sensitised solar
cells, laser dyes and optical sensors. In order to further explore the properties of these …

Highly luminescent lanthanide complexes sensitised by tertiary amide-linked carbostyril antennae

D Kovacs, D Phipps, A Orthaber, KE Borbas - Dalton Transactions, 2018 - pubs.rsc.org
Carbostyrils are among the most widely used sensitising antennae for luminescent
lanthanides; they afford bright complexes with Eu and Tb, and can also sensitise the …

Zirconia-based solid acids: green and heterogeneous catalysts for organic synthesis

M K. Patil, A N. Prasad, B M. Reddy - Current Organic Chemistry, 2011 - benthamdirect.com
This review highlights the application of sulfated, molybdated and tungstated zirconia solid
acid catalysts, and their modified forms for variety of organic synthesis and transformation …

[HTML][HTML] Ultrasound-assisted one-pot synthesis of substituted coumarins catalyzed by poly (4-vinylpyridinium) hydrogen sulfate as an efficient and reusable solid acid …

NG Khaligh - Ultrasonics sonochemistry, 2013 - Elsevier
Poly (4-vinylpyridinium) hydrogen sulfate solid acid was found to be efficient catalyst for
synthesis of substituted coumarins via Pechmann reaction using ultrasound irradiation at …

Syntheses and evaluation of daphnetin derivatives as novel G protein-coupled receptor inhibitors and activators

Y Wang, J Wang, Z Fu, R Sheng, W Wu, J Fan… - Bioorganic …, 2020 - Elsevier
Abstract A series of daphnetin (7, 8-dihydroxycoumarin) derivatives 1–22 were synthesized
including sixteen new compounds (1–5, 7–14, 18, 21 and 22) and six known compounds (6 …

Establishing a flow process to Coumarin‐8‐carbaldehydes as important synthetic scaffolds

J Zak, D Ron, E Riva, HP Harding… - … A European Journal, 2012 - Wiley Online Library
Despite their usefulness as fluorophores and synthetic precursors, efficient and reliable
routes to coumarin‐8‐carbaldehydes are lacking. We describe here a high‐yielding …