Results 71 to 80 of about 888 (170)

Pictet–Spengler-Based Multicomponent Domino Reactions to Construct Polyheterocycles

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

Sequential Photochemical and Prins Reactions for the Diastereoselective Synthesis of Tricyclic Scaffolds [PDF]

open access: yes, 2019
Cyclobutene alcohols undergo Prins cyclisations to generate single diastereomers of novel tricyclic heterocycles with five contiguous stereocentres. The reaction times are significantly shorter (ca.
Booker-Milburn, Kevin   +3 more
core   +2 more sources

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

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

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  

Development of Pyrimidine-based Natural Product-like Small Molecules with High Molecular Diversity [PDF]

open access: yes, 2019
학위논문 (박사)-- 서울대학교 대학원 : 자연과학대학 생물물리 및 화학생물학과, 2019. 2. 박승범.The important research goals in chemical biology are to discover small-molecule modulators that can disrupt the biological system and to identify the protein-protein interactions in which these ...
구재영
core  

The organic chemistry of conducting polymers. Annual technical report, June 1, 1994--September 30, 1995 [PDF]

open access: yes, 1995
Earlier research was on finite confinement for the soliton, proton- transfer doping of polyacetylene, electron hopping, Peierls distortion in discrete polyenes (cyanines), conductive heteropolymers, and synthesis and covalent attachment of polymerizable ...
Tolbert, L.M.
core   +1 more source

NEW APPROACHES TO CYCLOPENTADIENYL-FUSED THIOPHENE COMPLEXES OF IRON and SYNTHESIS AND CHARACTERIZATION OF CARBONIC ANHYDRASE ACTIVE-SITE MIMICS FOR CO\u3csub\u3e2\u3c/sub\u3e HYDRATION [PDF]

open access: yes, 2018
Polyheterocycles such as polythiophene and its derivatives comprise an important class of conducting polymers used for electronic applications. They have been of great interest for use in electronic materials due to their increased environmental ...
Gupta, Deepshikha
core   +1 more source

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