Results 11 to 20 of about 505 (151)
, 2016 The type two intramolecular Diels−Alder reaction (T2IMDA) is an efficient method for the formation of medium rings. The methodology is particularly effective for the construction of seven- and eight-membered rings.
K. J. Shea (2995842) +2 more
core +3 more sources
, 2023 Cyclooctane chains are an imperative class of cycloalkane in computational chemistry that are macrocyclic fragrant hydrocarbons. The fascinating characteristics and conformational properties of cyclooctanes have attracted numerous applications in the ...
Micheal Arockiaraj +3 more
core +1 more source
Highly substituted benzannulated cyclooctanol derivatives by samarium diiodide-induced cyclizations
Beilstein Journal of Organic Chemistry, 2010 A series of γ-oxo esters suitably substituted with various styrene subunits was subjected to samarium diiodide-induced 8-endo-trig cyclizations. Efficacy, regioselectivity and stereoselectivity of these reactions via samarium ketyls strongly depend on ...
Jakub Saadi +2 more
doaj +1 more source
Photonitrosation of Cyclooctane and Cyclododecane
The Journal of the Society of Chemical Industry, Japan, 1967 シクロアルカン類は光の存在下で塩化ニトロシルと反応して相当するシクロアルカノンオキシム塩酸塩を与えるが,このような光ニトロソ化反応におけるシクロヘキサン,シクロオクタン,シクロドデカンの反応挙動を比較検討した。シクロドデカンの場合は適当な溶媒の選択が重要であるが,シクロヘキサン(あるいはシクロオクタン)を溶媒として両者の混合反応を行なうことにより良好な結果を得た。また,これらの混合反応においてオキシム生成量の比を求めてシクロアルカンの反応性を比較した。(C8>C6≧C12)。
Yoichi SHIMOKAWA +2 more
openaire +2 more sources
Dispersion‐Enhanced Nitrogen‐Centered Photocatalysis of the Direct Hydrogen Atom Transfer
Angewandte Chemie, Volume 138, Issue 6, 2 February 2026.Nitrogen‐centered acridine photocatalysts for direct hydrogen atom transfer have been developed, leveraging dispersion interactions to enhance photocatalytic activity. This approach enables diverse functionalization reactions of strong C─H bonds even under cryogenic conditions and provides a new strategy for boosting the efficiency of direct HAT ...
Jiasong Zhang +16 more
wiley +2 more sources
Analytical Science Advances, Volume 7, Issue 1, June 2026.ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela +7 more
wiley +1 more source
Cyclooctane-1,2,5,6-tetrayl tetraacetate
Acta Crystallographica Section E Structure Reports Online, 2006 In the title compound, C16H24O8, the cyclooctane ring has a non-planar structure. Weak intermolecular C—H⋯O hydrogen bonding occurs in the crystal structure.
Yavuz, Metin +4 more
openaire +3 more sources
, 2016 A new versatile methodology, resulting in a formal three-carbon ring expansion of cyclopentanones, for the efficient assembly of functionalized cyclooctanoids is described.
J. Carlos Menéndez (564779) +3 more
core +1 more source
Selective Transfer Hydrogenation of Polyenes to Monoenes Catalysed by Shvo's Catalyst
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.We report the reduction of polyenes to monoenes with near‐perfect selectivities at full conversion with isopropanol as hydrogen source. The reaction is catalysed by Shvo's catalyst and the selectivity towards conjugation, semihydrogenation or full hydrogenation can be adjusted via the reaction temperature.
Justus Diekamp +6 more
wiley +1 more source
, 2016 Seven-membered lactones undergo selective SmI2–H2O-promoted radical cyclization to form substituted cyclooctanols. The products arise from an exo-mode of cyclization rather than the usual endo-attack employed in the few radical syntheses of cyclooctanes.
Just-Baringo, Xavier +7 more
core +1 more source