Results 81 to 90 of about 2,296 (262)

Asymmetric Synthesis Of Multifunctional Cyclopentanes And Cyclohexanes Via Oxycarbenium Ion Cyclizations Of 5-alkoxy-2(3H)-dihydrofuranones

, 1995
Intramolecular nucleophilic additions to oxycarbenium ions derived from 5-alkoxy-2(3)-dihydrofuranones gave substituted cyclopentanes or cyclohexanes in good yields. Stereoselectivity in these reactions was usually very high, while regioselectivity could
Geertsema, Edzard M.,, Oeveren, Arjan van, Meetsma, Auke,, Geertsema, E.M.,, Oeveren, A. van,, Oeveren, Arjan van,, Geertsema, Edzard M., Meetsma, Auke, Feringa, Ben L.,, Feringa, B.L.,, Leung, Chiu W., Feringa, Bernard, Leung, C.W.,, Leung, Chiu W.,   +13 more
core   +1 more source

Plasma Exosome Metabolomics Reveal Stage‐Specific Alterations in Elderly Women With Premetabolic and Metabolic Syndrome

Chronic Diseases and Translational Medicine, EarlyView.
Shared differential metabolites identified across the three sample groups. (A) Venn diagram of differential metabolites between the two comparison groups; Based on the detected levels of these overlapping differential metabolites, (B) d‐Arabitol, (C) Triclosan, (D) Iloprost, (E) Tetracosanoic acid, and (F) Omeprazole sulfone. Box plots were constructed
Mengtao Qian, Dan Nie, Qianyi Gao, Xingbo Mo, Huan Zhang   +4 more
wiley   +1 more source

CYCLOHEXANE! [PDF]

Chemical & Engineering News Archive, 1963
openaire   +2 more sources

Stereoselective Synthesis of Cyclohexanes via an Iridium Catalyzed (5 + 1) Annulation Strategy

, 2018
An iridium catalyzed method for the synthesis of functionalized cyclohexanes from methyl ketones and 1,5-diols is described. This process operates by two sequential hydrogen borrowing reactions, providing direct access to multisubstituted cyclic products
Donohoe, Timothy J., Frost, JR, Wasim M. Akhtar, Neil G. Stevenson (1378293), James R. Frost, Akhtar, Wasim M., Donohoe, TJ, Stevenson, NG, Roly J. Armstrong (3987503), Armstrong, RJ, Neil G. Stevenson, Wasim M. Akhtar (3726214), Timothy J. Donohoe (1301979), Timothy J. Donohoe, James R. Frost (3726211), Armstrong, Roland J., Roly J. Armstrong, Akhtar, WM   +17 more
core   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

Chemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve, Mariana Gomes Manso, Tibo Van Eeckhoorn, Mark E. Light, Bruno Linclau   +4 more
wiley   +1 more source

Electrocatalytic valorization of lignocellulose-derived aromatics at industrial-scale current densities. [PDF]

Nat Commun, 2023
Peng T, Zhang W, Liang B, Lian G, Zhang Y, Zhao W.   +5 more
europepmc   +1 more source

Oxocarbenium Ion and Alkene Metathesis Strategies for the Synthesis of Complex Cyclohexanes

, 2014
Highly oxygenated cyclohexanes comprise the structures of a number of pharmacologically interesting molecules, including potently bioactive natural products and carbapyranosides.
Mattis, Clayton Errol
core  

Synthesis of 2-iminoxy and 2-diethyl-aminoxy 1,3,2-dioxaarsacyclopentanes and -cyclohexanes

, 1976
2-Iminoxy and 2-diethylaminoxy-1,3,2-dioxaarsacyclo-pentanes and-cyclohexanes have been synthesised by several routes as volatile liquids. Attempts have been made to throw light on the structures of these derivatives by studies of i. r. and p.
Anand, K. L., Srivastava, G., Bohra, R., Mehrotra, R. C.   +3 more
core   +1 more source

Synthesis of substituted and condensed tetrahydrospiro[benzo-2- azepinecyclohexanes] from 1-cyano- and 1-carbamoyl-5-methyl-4,5-dihydro-3H- spiro[benzo-2-azepine-3,1′-cyclohexanes]

, 2020
Substitution of the nitrile group by hydroxylamine and hydrazine has been effected in 1-cyanodihydrospiro[benzo-2-azepine-3,1′-cyclohexane]. From the 1-cyano and 1-hydrazino derivatives tetrahydrospiro{1,2,3- and 1,2,4-triazolo[5,1-a]benzoazepine-5,1 ...
Levov A.N., Eganov A.A., Chernyshev A.I., Varlamov A.V., Grudinin D.G.   +4 more
core   +1 more source

Photoinduced Electron Transfer (PET) as Key to Accelerate the Cycloreversion Reaction of Arylquadricyclanes

Chemistry – A European Journal, EarlyView.
It is demonstrated that the photoinduced cycloreversion of a methoxynaphthylquadricyclane in the presence of suitable photocatalysts gives quantitatively the corresponding norbornadiene. As this photochromic norbornadiene‐quadricyclane cycle has favorable properties for light energy conversion, this method provides a useful tool for the targeted ...
Julian Felix Maria Hebborn, Heiko Ihmels, Marco Löcker, Thomas Paululat, Robin Schulte   +4 more
wiley   +1 more source