Results 71 to 80 of about 7,702 (217)

A Unified Photoredox Platform for Divergent Dual C─H/N─H Selenylation to Access N,C‐ and C,C‐Diselenides

open access: yesAsian Journal of Organic Chemistry, Volume 15, Issue 8, August 2026.
We report a visible‐light photoredox‐catalyzed strategy for the divergent dual selenylation of inert C─H and N─H bonds. Using a single catalytic system with Ru(bpy)3Cl2·6H2O and diselenides, arylamines and indoles are selectively converted to distinct N,C‐ or C,C‐disubstituted organoselenides, respectively. ABSTRACT We report a visible‐light photoredox‐
Fengxiang Zhu, Ying Hou, Xiao‐Feng Wu
wiley   +1 more source

Utilisation of alicyclic compounds by soil bacteria [PDF]

open access: yes, 2006
Alicyclic compounds are recalcitrant hydrocarbons, they are a major component of crude oil and their fraction in the oil may be as high as 37%. They are used as industrial chemicals and are obtained via extraction from petroleum or by synthesis. A number
Musa, K. I.   +3 more
core  

Structure-Property Relationships of Alicyclic Polyesters

open access: yes, 2023
Polyesters are an important class of polymers in many applications ranging from common-use objects—such as packaging containers, clothing, and upholstery—to more advanced applications, such as lightweight strength materials in construction, electronics ...
Thompson, Tiffany Nikia
core  

Multicomponent polyimide films for enhanced energy storage

open access: yese-Polymers
Polymer dielectric films have extensive applications in power systems, pulse power systems, hybrid vehicles, and clean energy. However, with advancements in energy storage technology and increasingly demanding operating environments, particularly under ...
Hu Jinglong   +4 more
doaj   +1 more source

(25R)-5a-Spirostane-3,12-dione

open access: yesActa Crystallographica Section E, 2009
The title compound, C27H40O4, was obtained from the oxidation of (25R)-3b-hydroxy-5a-spirostan-12-one (Hecogenin) by Jone's reagent. The molecule contains six alicyclic and heterocyclic rings, all trans-fused, among which four six-membered rings adopt ...
Ling-Li Zheng   +3 more
doaj   +1 more source

Crystal engineering with alicyclic β-amino acids: Construction of hydrogen-bonded bilayers

open access: yes, 2004
The crystal structures of four homologous cis-alicyclic ß-amino acids present a new recurring layer pattern of hydrogen bonds. This pattern was derived from two one-dimensional patterns observed in related alicyclic 2-hydroxycarboxylic acid structures ...
Gyarmati, Zsuzsanna Cs.   +4 more
core   +1 more source

Synthesis of Polycyclic Isoindolines via CH/NH Annulation of Alicyclic Amines

open access: yes, 2022
Relatively unstable cyclic imines, generated in situ from their corresponding alicyclic amines via oxidation of their lithium amides with simple ketone oxidants, engage aryllithium compounds containing a leaving group on an ortho-methylene functionality ...
Scott D. Daniel   +7 more
core   +1 more source

Scientific Opinion on Flavouring Group Evaluation 51, Revision 1 (FGE.51Rev1): Consideration of alicyclic ketones and secondary alcohols and related esters evaluated by the JECFA (59th meeting) structurally related to alicyclic ketones secondary alcohols and related esters in FGE.09Rev3 (2011)

open access: yesEFSA Journal, 2012
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Synthesis of Wholly Alicyclic Polyimides from N-silylated Alicyclic Diamines and Alicyclic Dianhydrides

open access: yesSynthesis of Wholly Alicyclic Polyimides from N-silylated Alicyclic Diamines and Alicyclic Dianhydrides
identifier:oai:t2r2.star.titech.ac.jp ...
  +6 more sources

(2R,3aR,4S,7R,7aS,9R,10aR,11S,14R,14aS)-rel-3a,4,7,7a,10a,11,14,14a-Octahydro-4,14:7,11-diepoxy-2,9-propanonaphtho[1,2-f:5,6-f′]diisoindole-1,3,8,10-tetrone (9CI): a cyclophane derived from naphtho[1,2-c:5,6-c]difuran

open access: yesActa Crystallographica Section E, 2008
The title compound, C25H18N2O6, is a naphthalenophane styled in the manner of Warrener's alicyclic cyclophanes or molecular racks wherein a trimethylene tether is perfectly staggered between the two N atoms such that the central methylene H atoms point ...
Peter W. Dibble   +2 more
doaj   +1 more source

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