Results 71 to 80 of about 916 (181)

New secondary batteries utilizing electronically conductive polymer cathodes [PDF]

open access: yes
The objectives are to optimize the transport rates in electronically conductive polypyrrole films by controlling the morphology of the film and to assess the utility of these films as cathodes in a lithium/polypyrrole secondary battery.
Martin, Charles R., White, Ralph E.
core   +1 more source

Pd-Catalyzed de Novo Assembly of Diversely Substituted Indole-Fused Polyheterocycles [PDF]

open access: yes, 2019
Here we describe a facile, tandem synthetic route for indolo[3,2-c]quinolinones, a class of natural alkaloid analogues of high biological significance. A Ugi four-component reaction with indole-2-carboxylic acid and an aniline followed by a Pd-catalyzed ...
Butera, Roberto   +6 more
core   +1 more source

Multicomponent reactions, applications in medicinal chemistry & new modalities in drug discovery [PDF]

open access: yes, 2020
The aim of this dissertation is to discuss new targets, to apply multicomponent reaction chemistry on scaffolds significant for medicinal chemistry applications and to implement new modalities in drug design and medicinal chemistry.
Konstantinidou, Markella
core   +2 more sources

Visible‐Light‐Driven Cyclizations

open access: yesAdvanced Synthesis &Catalysis, Volume 366, Issue 4, Page 635-697, February 20, 2024.
Abstract In recent years, the interest to develop cyclizations promoted by visible light has been gaining a lot of attention due to its sustainability aspect. In this review, we summarize the most important advances in this period by describing the methods used to generate different ring sizes, while focusing on the mechanistic details of these ...
Emilia Oueis, Mirella Elkadi, Ramon Rios
wiley   +1 more source

AC impedance analysis of polypyrrole thin films [PDF]

open access: yes
The AC impedance spectra of thin polypyrrole films were obtained at open circuit potentials from -0.4 to 0.4 V vs SCE. Two limiting cases are discussed for which simplified equivalent circuits are applicable.
Martin, Charles R., Penner, Reginald M.
core   +1 more source

Post-Ugi Cyclization for the Construction of Diverse Heterocyclic Compounds: Recent Updates [PDF]

open access: yes, 2018
Multicomponent reactions (MCRs) have proved as a valuable tool for organic and medicinal chemist because of their ability to introduce a large degree of chemical diversity in the product in a single step and with high atom economy.
Erik V. Van der Eycken   +4 more
core   +1 more source

Pictet–Spengler-Based Multicomponent Domino Reactions to Construct Polyheterocycles

open access: yesPharmaceutical Fronts, 2023
Jun-Duo Hu   +2 more
doaj   +1 more source

Anomalous optical and ESR properties of doped polydiethynylsilanes [PDF]

open access: yes, 1991
Journal ArticleThe optical, transport, and ESR properties of soluble conducting four-membered polydiethynylsilane heterocycles are described. The undoped one-dimensional gap is 2.0 eV in both films and solutions; no photoluminescence is observed.
Ni, Q.-X., Vardeny, Zeev Valentine
core  

Photoassisted Access to New Polyheterocycles [PDF]

open access: yes, 2014
Photoassisted diversity-oriented synthesis holds great promise in its ability to provide rapid access to complex and diverse molecular scaffolds. As it stands, while photochemical techniques have this potential, their implementation in the field of ...
Cowger, Teresa M.
core   +1 more source

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