Results 91 to 100 of about 3,594 (226)

Intermolecular Electrophilic Germylation Using GeCl4 and Al2Cl6

open access: yesAngewandte Chemie, Volume 138, Issue 22, 25 May 2026.
While electrophilic aromatic substitution is well‐established for carbon and silicon‐based electrophiles, it is extremely underdeveloped for germanium. Herein we report the first effective intermolecular Germa–Friedel–Crafts reaction. The process can be modified to enable selective synthesis of the mono‐ or the di‐aryl germane derivatives, ArGeCl3 and ...
Justyna Łosiewicz   +4 more
wiley   +2 more sources

Biodestruction of Petroleum Hydrocarbons

open access: yesEurasian Chemico-Technological Journal, 2001
Biodegradation of light and high-viscosity oils by hydrocarbon-oxidizing microflora has been studied. Microflora was isolated from the formation waters recovered from West Siberian and “White Tiger”  (Vietnam) oil fields.
L. I. Svarovskaya, L. K. Altunina
doaj   +1 more source

Antifibrotic Phenanthrenes of Dendrobium nobile Stems

open access: yes, 2016
Two new phenanthrenes (1 and 6) and four new dihydrophenanthrenes (2–5) were isolated from a methanolic extract of Dendrobium nobile stems, along with 13 known phenanthrenes and dihydrophenanthrenes (7–19).
Hyekyung Yang (2461081)   +2 more
core   +1 more source

DNA‐Binding Properties of Iridium(III) Complexes Encompassing Design, Function and Biophysical Assessments

open access: yesChemPhysChem, Volume 27, Issue 11, 15 June 2026.
This review describes the biophysical techniques used to investigate DNA‐binding phenomena and the progress made so far in the application of iridium(III) complexes for this purpose. Ir(III) complexes offer myriad opportunities in the design and study of DNA‐binding agents and discussed examples are contextualised with complementary studies in ...
Ibrahim S. Alkhaibari   +2 more
wiley   +1 more source

Chemical Constituents and Biological Activity Profiles on Pleione (Orchidaceae)

open access: yesMolecules, 2019
Pleione (Orchidaceae) is not only famous for the ornamental value in Europe because of its special color, but also endemic in Southern Asia for its use in traditional medicine.
Xiao-Qian Wu   +6 more
doaj   +1 more source

Synthesis and Reactivity of Iodepinium Salts

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 22, 9 June 2026.
An efficient oxidative cyclization of (Z)‐iodostilbenes grants access to the long‐elusive class of seven‐membered diaryliodonium salts — the iodepinium triflates. X‐ray analysis reveals their distinctly nonplanar geometry, while reactivity studies uncover unprecedented pathways, including copper‐mediated conversion to phenanthrene and chalcogen‐induced
Jan Rick Koch   +3 more
wiley   +1 more source

Gold(I)‐Catalyzed C(sp3)–C(sp) Cross‐Coupling: Access to Alkynylated Tetrahydrofuran Derivatives

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 11, 3 June 2026.
An Au(I)‐catalyzed C(sp3)–C(sp) cross‐coupling, unsuccessful under photosensitized conditions for vinylgold(I) complexes, is achieved using MeDalPhosAuCl under thermal conditions, giving alkynylated tetrahydrofuran derivatives. The reaction proceeds via an Au(III) intermediate formed by oxidative addition of an alkynyl iodide.
Jorge C. Herrera‐Luna   +7 more
wiley   +1 more source

Straightforward synthesis of phenanthrenes from styrenes and arenes

open access: yes, 2012
Semi-one-pot synthesis of phenanthrenes from styrenes and arenes was developed through cross-dehydrogenative coupling. A sequence of Heck-type coupling and photo-cyclization were involved and a variety of functionalities were tolerated.
He, Ke-Han   +6 more
core   +1 more source

Svjetlom do heteropolicikličkih spojeva; Reakcije supstituiranih furostilbena [PDF]

open access: yesKemija u Industriji, 2007
Synthetic organic photochemistry, the chemistry of excited states of a molecule, differs from the ground state chemistry and provides a simple pathway to complicated structures, heavily obtainable by a classic synthetic approach.
Šindler-Kulyk, M., Škorić, I.
doaj  

Synthesis of 2,3-Disubstituted Carbazoles, Benzo[c]carbazoles, and Phenanthrenes Through FeCl3-Mediated Cyclization of Triene Frameworks

open access: yesSynOpen, 2018
A facile synthesis of 2,3-disubstituted carbazoles through electrocyclization of 2,3-divinylindoles using FeCl3 in DMF at reflux is reported. The methodology was found to be applicable for smooth transformation of 3-aryl-2-vinylindole as well as 2 ...
Potharaju Raju   +3 more
doaj   +1 more source

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