Results 101 to 110 of about 6,216 (203)

Transfer Hydrogenation: Advances in Manganese and Nickel Metal Catalysis

Journal of Chemistry, Volume 2026, Issue 1, 2026.
Transfer hydrogenation (TH) of ketones, catalyzed by transition–metal complexes, produces alcohols, which are important building blocks in the pharmaceutical and fine chemical industries. For a long time, catalysts based on noble metals such as ruthenium, rhodium, and iridium have dominated the TH of ketones.
James Kamau, George S. Nyamato, Joanne Ogunah, Munmun Bardhan   +3 more
wiley   +1 more source

New “Green” Approaches to the Synthesis of Pyrazole Derivatives

Molecules, 2007
A novel approach to the synthesis of pyrazole derivatives from tosylhydrazones of α,β-unsaturated carbonyl compounds possessing a β-hydrogen is proposed, exploiting microwave (MW) activation coupled with solvent free reaction conditions.
Carla Villa, Sara Baldassari, Romano Grandi, Paolo Veronesi, Roberto Rosa, Antonino Rizzuti, Cristina Leonelli, Anna Corradi   +7 more
doaj   +1 more source

From Leaf to Brew: Comprehensive Insights Into the Physiology, Processing, and Flavor of Nanchuan Tea (Camellia nanchuanica)

Food Chemistry International, Volume 1, Issue 4, Page 375-383, December 2025.
Nanchuan tea: a novel tea resource with a unique flavor profile. ABSTRACT Camellia nanchuanica, a unique tea species endemic to the mountainous regions of Nanchuan (Chongqing, China), represents a valuable germplasm resource with distinctive flavor characteristics and physiological adaptations.
Yan Liu, Liyong Luo, Liang Zeng
wiley   +1 more source

Extending the Study of the 6,8 Rearrangement in Flavylium Compounds to Higher pH Values: Interconversion between 6-Bromo and 8-Bromo-apigeninidin [PDF]

, 2016
Fundacao para a Ciencia e a Tecnologia (FCT) (SFRH/BPD/72652/2010; SFRH/BPD/84805/2012) FCT Fundo Europeu de Desenvolvimento Regional (FEDER) (007265 UID/QUI/50006/2013)he rearrangement between isomers 6- and 8-bromo-apigeninidin (6 and 8) was studied by
Awika, Baranac, Bjorøy, Brouillard, Brouillard, Busetta, Geera, Jurd, Küster, Mas, Pina, Pina, Sweeny, Sweeny   +13 more
core   +1 more source

Ruthenium Complexes with PYA Pincer Ligands for Catalytic Transfer Hydrogenation of Challenging Substrates

CHIMIA, 2019
Here we highlight the potential of a series of ruthenium complexes with tridentate N,N,N pincer-type ligands featuring two pyridylidene amide (PYA) moieties in the ligand skeleton.
Philipp Melle, Martin Albrecht
doaj   +1 more source

A reciclable bifuctional acid-base organocatalyst with ionic liquid character. The role of sites separation and spatial configuration on different condensation reaction [PDF]

, 2011
A series of bifunctional organic catalysts containing acid and basic sites with ionic liquid characteristics have been prepared and their catalytic activity and reaction coordinate for aldol and Knoevenagel condensations have been compared.
Avelino Corma, Ballesteros, Bass, Becke, Boronat, Boronat, Boronat, Climent, Climent, Climent, Climent, Corma, Corma, Corma, Corma, Davis, Dewar, Drexler, Fuentes, Gröger, Hill, Kanai, Kanemasa, Koshland, Lin, Ma, María J. Sabater, María José Climent, Mercedes Boronat, Motokura, Perdew, Raquel Montón, Rose, Sara Iborra, Shen, Shen, Vasella, Wang, Yit   +38 more
core   +1 more source

The effect of the fused-ring substituent on anthracene chalcones: crystal structural and DFT studies of 1-(anthracen-9-yl)-3-(naphthalen-2-yl)prop-2-en-1-one and 1-(anthracen-9-yl)-3-(pyren-1-yl)prop-2-en-1-one

Acta Crystallographica Section E: Crystallographic Communications, 2018
The title chalcone compounds, C27H18O (I) and C33H20O (II), were synthesized using a Claisen–Schmidt condensation. Both compounds display an s-trans configuration of the enone moiety.
Dian Alwani Zainuri, Ibrahim Abdul Razak, Suhana Arshad   +2 more
doaj   +1 more source

trans-chalcone ameliorates CCl4-induced acute liver injury by suppressing endoplasmic reticulum stress, oxidative stress and inflammation

Pathology - Research and Practice
Acute liver injury serves as a crucial marker for detecting liver damage due to toxic, viral, metabolic, and autoimmune exposures. Due to the response to adverse external stimuli and various cellular homeostasis, Endoplasmic reticulum stress (ERS), Oxidative stress, and Inflammation have great potential for treating liver injury.
Suvesh Munakarmi, Yamuna Gurau, Juna Shrestha, Lokendra Chand, Ho Sung Park, Geum-Hwa Lee, Yeon Jun Jeong   +6 more
openalex   +3 more sources

The Effect of Trans-Chalcone on Amylase Activity, Blood Glucose and Lipid Levels in Diabetic and Non Diabetic Rats

Armaghane Danesh Bimonthly Journal, 2011
Introduction & Objective: Alpha amylase is the most important decomposing enzyme in starch. Digestion and absorption of starch in the intestine can be prevented and also the blood sugar levels can be controlled by restrain and control of alpha amylase ...
M Najafian, A Ebrahim-Habibi, P Yaghmaei, K Parivar, B Larijani   +4 more
doaj  

(E)-1-(4-Aminophenyl)-3-(naphthalen-2-yl)prop-2-en-1-one

Acta Crystallographica Section E, 2011
The molecule of the title chalcone derivative, C19H15NO, exists in a trans configuration with respect to the C=C double bond. The molecule is slightly twisted with a dihedral angle of 6.12 (12)° between the benzene ring and the ...
Thawanrat Kobkeatthawin, Suchada Chantrapromma, Nisakorn Saewan, Hoong-Kun Fun   +3 more
doaj   +1 more source