Results 121 to 130 of about 7,607,880 (287)

Hypervalent Iodine Phenol Dearomatization Mediated by Mechanochemistry

Chemistry – A European Journal, EarlyView.
A solvent‐free mechanochemical process has been developed that enables the rapid oxidative dearomatization of phenols. This method produces spiranic dienones with decent to good yields. This process eliminates the need for expensive and environmentally harmful perfluorinated alcohols, such as hexafluoroisopropanol and trifluoroethanol, while adhering ...
Jérémie Cuillerier, Camille Rocq, Xavier Ottenwaelder, Sylvain Canesi   +3 more
wiley   +1 more source

Nucleophilic Reactions of Cyclobutenones and the Related 4,4‐Dichlorocyclobutenone Derivatives

European Journal of Organic Chemistry, EarlyView.
Cyclobutenone derivates and their 4,4‐dichloro counterparts have an uninterrupted attention as useful synthons in the synthesis of complex organic molecules. Their nucleophilic reactions remain underexplored. This review brings attention to these reactions, whose outcome is not straightforward.
Sarah J. Wright, Muhluri H. Mthombeni, Songeziwe Ntsimango   +2 more
wiley   +1 more source

Cycloaddition Reactions of Alkynyl‐[2.2]paracyclophanes Toward Fluorenone and Benzene Analogs

European Journal of Organic Chemistry, EarlyView.
Cycloaddition reactions of ethynyl [2.2]paracyclophane and methyl 3‐( [2.2]paracyclophan‐2‐yl)propynoate were studied under different conditions. Catalytic cyclotrimerization of the former gave rise to the 2‐aryl‐[2.2]paracyclophanes. Diels–Alder reaction of the latter with tetramethylcyclobutadiene‐AlCl3 adduct furnished Dewar benzenes that were ...
Stefanie Magela Perdomo, Marko Purić, Ivana Císařová, Timothée Cadart, Martin Kotora   +4 more
wiley   +1 more source

Highly Stereoselective Hydroxy-Directed Diels−Alder Reaction

, 2016
The successful stereocontrol of the Diels−Alder reaction of semicyclic dienes possessing a secondary and tertiary allylic magnesium alkoxide alcohol functionality and activated dienophiles such as methyl acrylate, methacrolein, acrolein, and N ...
Jermaine D. O. Thomas (3032259), Louis Barriault (1590244), Roxanne Clément (3032256)   +2 more
core   +1 more source

Photocatalysis‐Triggered Click Reactions and Applications

European Journal of Organic Chemistry, EarlyView.
Photoclick chemistry offers broad applications ranging from materials science to bioconjugation, with precise spatiotemporal control over click reactions. Initially limited to UV activation, recent advances have extended photoclick processes to the visible and NIR regions thanks to the photocatalysis.
Margaux Walter, Jean‐Philippe Goddard, Morgan Cormier   +2 more
wiley   +1 more source

Carbon‐Supported Catalytic Systems Assembled by π–π Interactions

European Journal of Organic Chemistry, EarlyView.
This review explores the noncovalent immobilization of organic and organometallic catalysts on carbonaceous supports through π–π interactions, highlighting its potential to enhance catalyst recovery, recyclability, and the sustainability of organic synthesis.
Chloé Jamalkhan, Léa Ibos, Sarah Bouery, Veronika Myronova, Anaïs Scuiller, Mohamed Mellah, David Kreher, Emmanuelle Schulz, Olivier R. P. David   +8 more
wiley   +1 more source

Ionic Diels-Alder Reaction : Recent Developments

, 1998
Facility for Ecological and Analytical Testing (FEAT), Indian Institute of Technology, Kanpur-208 016 Department of Chemistry, Indian Institute of Technology, Kanpur-208 016 Manuscript received 17 August 1998 Ionic Diels-Alder Reaction : Recent ...
PADMA S. VANKAR, RASHMI SANGHI, YASHWANT D. VANKAR   +2 more
core   +1 more source

Phytochemical composition and cultivar‐dependent variation in colored lettuce (Lactuca sativa) and their α‐amylase inhibitory activity

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND This study investigated cultivar‐dependent variation in the phytochemical composition of lettuce (Lactuca sativa) using liquid chromatography–tandem mass spectrometry (LC–MS/MS) profiling and high‐performance liquid chromatography (HPLC) quantification, with a focus on enzyme inhibitory activity. RESULTS Significant differences were
Neil Patrick Uy, Hak‐Dong Lee, Sang‐Yun Lee, Hoon Kim, Sanghyun Lee   +4 more
wiley   +1 more source

Progress in Lewis-Acid-Templated Diels–Alder Reactions

Molecules
The synthesis of natural products with complicated architectures often requires the use of segments with functional groups that can be structurally transformed with the desired stereogenic centers.
Jun Ishihara
doaj   +1 more source

Complexation-Initiated Intramolecular Diels−Alder Reaction

, 2016
A complexation-initiated intramolecular Diels−Alder reaction was demonstrated for the first time. On adsorbing the alkyne−Co2(CO)6 complexes having a diene and a dienophile on opposite ends of the alkyne on silica gel, the Diels−Alder reaction was ...
Mari Iwamoto (2709496), Fumiko Sakurada (3062433), Nobuharu Iwasawa (1627195)   +2 more
core   +1 more source