Results 51 to 60 of about 888 (170)

2‐Aminoindoles and 2‐Iminoindolines as Viable Precursors of Indole‐Fused Nitrogenated Polyheterocycles

Advanced Synthesis &Catalysis, Volume 367, Issue 6, March 18, 2025.
Abstract The synthesis of architecturally complex polyheterocyclic structures embedding the indole ring represents a growing field of interest. Carbolines and their partially dehydro derivatives, pyrazinoindoles, indoloindoles, azepinoindoles and other medium‐sized derivatives are only some examples of indole‐containing polycyclic compounds featured by
Alessandro Palmieri, Marino Petrini
wiley   +1 more source

Molybdenum‐Catalyzed Direct Synthesis of Pyrroles from Nitroarenes with Glycols as Reductants

Advanced Synthesis &Catalysis, Volume 367, Issue 4, February 18, 2025.
Abstract A molybdenum‐catalyzed synthesis of N‐(hetero)aryl pyrroles directly from inexpensive and commonly available (hetero)nitroarenes via reduction with pinacol and annulation with 1,4‐dicarbonyls or cyclobutane‐1,2‐diols has been described. The process does not require an inert atmosphere and tolerates the presence of air and water. This non‐noble
Sara Gómez‐Gil, Samuel Suárez‐Pantiga, María R. Pedrosa, Roberto Sanz   +3 more
wiley   +1 more source

ELECTROOPTICAL PROPERTIES OF THIN FILMS OF POLYHETEROCYCLES

Le Journal de Physique Colloques, 1983
Some conducting polyheterocycles prepared by electroinitiated polymerization as thin films on electrodes change color reversibly when they are electrochemically cycled. As an example, polypyrrole is synthetized in an oxidized form and may be reduced reversibly between 0 and - 0,7 volt vs SCE.
Gazard, M., Dubois, J, Champagne, M., Garnier, F., Tourillon, G.   +4 more
openaire   +1 more source

Enantioselective Cascade Reactions of Aminocatalytic Dienamines and Trienamines Initiated by a Cycloaddition Reaction

Chemistry – A European Journal, Volume 31, Issue 1, January 2, 2025.
This review outlines and showcases how aminocatalytic dienamines and trienamines can be used in stereoselective cascade reactions, that are initiated by a cycloaddition reaction to rapidly access complex chiral molecules. We aspire that the chemical community can use this review to design new cascade reaction or use current methodologies in complex ...
Jonas Faghtmann, Signe Sofie Pladsbjerg Andresen, Anne Rask Østergaard, Karl Anker Jørgensen   +3 more
wiley   +1 more source

Metathesis Approach to the Synthesis of Polyheterocyclic Structures from Oxanorbornenes [PDF]

Organic Letters, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Jeffrey D, Winkler, Sylvie M, Asselin, Stacey, Shepard, Jing, Yuan   +3 more
openaire   +2 more sources

New cyclic oligothiophenes and their co-oligomers derivatives ofmolecular engineering interest

, 2014
International audienceThe electronic properties of several series of bridged oligomers and their co-oligomers derivatives of five-membered biheterocycles (bithiophene, bipyrrole, bifuran bridged by CO or CS group) in their linear and cyclic structures ...
Benmensour, Mohammed Ali, Boucekkine, Abdou, Djennane-Bousmaha, Sema   +2 more
core   +4 more sources

Catalytic Enantioselective Functionalization of Maleimides: An Update

Chinese Journal of Chemistry, Volume 42, Issue 24, Page 3605-3622, 15 December 2024.
Maleimides are multisite‐reactive scaffolds that have stimulated a growing interest in the field of synthetic organic chemistry. The present review covers the utilization of maleimides as electrophilic partners and pro‐nucleophilic partners in metal‐catalyzed or organocatalyzed functionalizations with the control of either central and/or axial ...
Muriel Amatore, Damien Bonne, Thierry Constantieux, Jean Rodriguez   +3 more
wiley   +1 more source

1,2‐Diaza‐1,3‐Dienes as a Multifaceted Synthons for the Synthesis of Heterocycles: A Fifteen‐Years Update

European Journal of Organic Chemistry, Volume 27, Issue 44, November 25, 2024.
1,2‐Diaza‐1,3‐butadienes, also called azoalkenes, have received considerable attention as key synthons for constructing various heterocyclic scaffolds. This minireview summarizes the contribution of our group in this field over the period from 2009 to the present, focusing on the role of the azoene building block in forming the heterocyclic structures.
Lucia De Crescentini, Giacomo Mari, Stefania Santeusanio, Gianfranco Favi, Fabio Mantellini   +4 more
wiley   +1 more source

Conjugated polymers: Synthesis and applications in optoelectronics [PDF]

, 2014
In the last 50 years the development of conjugated polymers for applications in optoelectronics and energy has attracted great interest because of its use as conductive polymers, in solar cells or electronic devices.
Anguera, Gonzalo, Sánchez-García, David   +1 more
core  

Synthesis of Heterocyclic Fused [1,5]naphthyridines by Intramolecular HDA Reactions [PDF]

, 2019
Povarov reaction [1] can be considered as an example of HDA reactions and represents an excellent method for the preparation of nitrogen-containing heterocyclic compounds [2].
Alonso Pérez, Concepción Estibaliz, Martín Encinas, Endika, Palacios Gambra, Francisco Javier, Rubiales Alcaine, María Gloria   +3 more
core   +1 more source