Results 11 to 20 of about 478,322 (298)
The cationic ring-opening polymerization of cyclic ethers [PDF]
The kinetics and mechanisms of ring opening polymerization and copolymerizntion of different cyclic ethers were studied using mainly a cationic system of iinitiation. BF30Et2/ethanediol.
Gouardères, Frédéric P.
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Enantioselective Synthesis of Cyclic Nitrones and Oxime Ethers by Chemoselective Allylic Alkylation of Oximes [PDF]
, 2020 The enantio- and chemoselective iridium-catalyzed N- and O-allylation of oximes is described for the first time. Kinetic resolution in an intramolecular setting provides access to cyclic nitrones, oxime ethers and enantioenriched aliphatic allylic ...
Tobias, Sandmeier, Erick, Carreira
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Bis(arylsulfonyl) Peroxide-Mediated Difunctionalization of Cyclic Enol Ethers
, 2023 A bis(arylsulfonyl) peroxide-mediated 1,2-difunctionalization of cyclic enol ethers is reported. Bis(nosyl) peroxide selectively sulfonylates the 3-position of enol ethers, generating an oxocarbenium ion that is trapped by a carboxylic acid nucleophile ...
Armido Studer +3 more
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Towards ionic channels with crown ethers and calix[n]arenes (with n=6,8) [PDF]
, 2006 This thesis reports the new crystal structures of crown ethers and calixarenes as well as the ionic conduction properties of crown ether channels. Chapter I gives general knowledge about ion channels.
Bergougnant, Remi
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Rh(II)-Catalyzed Spirocyclization of α‑Diazo Homophthalimides with Cyclic Ethers
, 2019 Rh(II)-catalyzed decomposition of α-diazo homophthalimides in the presence of cyclic ethers gave spirocyclic products of Stevens-type [1,2]-alkyl shift within the postulated oxonium ylide intermediate.
Alexander S. Novikov (1616380) +5 more
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Synthesis and desulfurization-decarboxylation of cyclic thionocarbonates of glycerol 1-ethers
Journal of Lipid Research, 1969 A method is described for the synthesis of cyclic thionocarbonates of 1-O-alkyl glycerols in quantitative yield. These derivatives of glycerol ethers can be quantitated by UV absorbance, analyzed by gas-liquid chromatography, or quantitatively converted ...
S. Ramachandran +2 more
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2 versus E2 Competition of Cyclic Ethers
, 2023 We have quantum chemically studied the influence of ring strain on the competition between the two mechanistically different SN2 and E2 pathways using a series of archetypal ethers as substrate in combination with a diverse set of Lewis bases (F−, Cl ...
Hansen, Thomas; id_orcid +9 more
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Giant, 2023 ABAC-type periodic poly(cyclic acetal)s were synthesized via a two-step method consisting of the synthesis of a sequence-programmed cyclic trimers from one vinyl monomer and two bifunctional aldehydes (isophthalaldehyde or terephthalaldehyde) and the ...
Tadashi Naito +2 more
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Metal-Free Synthesis of N-Aryl-Substituted Azacycles from Cyclic Ethers Using POCI3
, 2021 A facile method for the synthesis of N-aryl-substituted azacycles from arylamines and cyclic ethers has been developed. In this study, arylamines were treated with cyclic ethers in the presence of POCI3 and DBU to provide five- and six-membered azacycles.
강수성
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Crystals, 2017 The electrostatic potential near to the oxygen atom in each of the cyclic ethers 2,5-dihydrofuran, oxetane and oxirane has been calculated by using a distributed multipole analysis (DMA) of each molecule. The electrostatic potential energy V(φ) of a unit
J. Grant Hill, Anthony C. Legon
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