Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Yvon Pointud"'
Autor:
Yvon Pointud, Anne-Gaëlle Valade, Denise Dugat, Georges Jeminet, Christelle Pointon, J.L. Beltrán
Publikováno v:
Supramolecular Chemistry. 15:261-269
The binding abilities of a new class of 14-membered ring ligands bearing diketal dilactam functions were explored by UV-visible spectrophotometry. Their formation constants, determined in THF solution, showed appreciable complexation with divalent ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7f6cbce5af6e4ac2489b7d72475753e
https://doi.org/10.1080/1061027021000041456a
https://doi.org/10.1080/1061027021000041456a
Publikováno v:
Tetrahedron Letters. 40:4993-4996
Macrobicyclic polyethers based on the cryptand model displaying a chirality due to a spiran junction were synthesized from diamines 7 and 8. Results of attempted direct macrobicyclisation varied with the length the α,ω-oligoethyleneglycol ditosylat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c5b4fb7b21e0dd4404b195412cf826e
https://doi.org/10.1016/s0040-4039(99)00915-6
https://doi.org/10.1016/s0040-4039(99)00915-6
Publikováno v:
Tetrahedron: Asymmetry. 9:4253-4265
New macrocyclic polyethers possessing chirality due to a spiro ring junction are prepared from 2,8-dihydroxymethylated (+)-1,4,7,10-tetraoxaspiro[5.5]undecane 1 and (+)-1,4,7-trioxa-10-azaspiro[5.5]undecane 2 , both ( E,E ). N -Functionalization of c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f087ac5ff38b17df717c023d7dd513e6
https://doi.org/10.1016/s0957-4166(98)00453-4
https://doi.org/10.1016/s0957-4166(98)00453-4
Autor:
Lionel Astier, Jean Juillard, Claude Bernard, Yvon Pointud, Sébastien Touzain, Béatrice Sabatier
Publikováno v:
Scopus-Elsevier
Journal of Solution Chemistry
Journal of Solution Chemistry, 1997, 26 (5), pp.479-495. ⟨10.1007/BF02767602⟩
Journal of Solution Chemistry, Springer Verlag (Germany), 1997, 26 (5), pp.479-495. ⟨10.1007/BF02767602⟩
Journal of Solution Chemistry
Journal of Solution Chemistry, 1997, 26 (5), pp.479-495. ⟨10.1007/BF02767602⟩
Journal of Solution Chemistry, Springer Verlag (Germany), 1997, 26 (5), pp.479-495. ⟨10.1007/BF02767602⟩
The standard Gibbs functions, enthalpies, and entropies for the formation of the complexes of monensin acid with monovalent metal cations in acetonitrile were obtained using various methods (conductometry, potentiometry, and calorimetry). Complexatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3be79e323186e66e67662555ede91826
https://doi.org/10.1007/bf02767602
https://doi.org/10.1007/bf02767602
Publikováno v:
Journal of Solution Chemistry. 22:769-785
Interactions of ionophore monensin with heavy metal monovalent cations, Ag+, Tl+, Hg 2 2+ , were studied in methanol and in various biphasic waterorganic solvent systems to supplement previous data on alkali-metal cations. The species formed were ide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fb4f196c0aa06a68095171d693a00eb
https://doi.org/10.1007/bf00648581
https://doi.org/10.1007/bf00648581
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :1681-1686
Extraction of alkaline-earth cations M2+ in water by lasalocid HA in chloroform results in formation of neutral complex salts MA2. Corresponding reaction constants are obtained. An increase in the selectivity of lasalocid as a function of cation size
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::740167a4c0d5b578bc509cbbbd3fdd61
https://doi.org/10.1039/p29930001681
https://doi.org/10.1039/p29930001681
Publikováno v:
J. Chem. Soc., Faraday Trans.. 88:1017-1021
Alkali-metal complex salts of the ionophore lasalocid are shown to be slightly soluble in pure water and aqueous phases. Both the ionic solubility products and the solubilities of the neutral undissociated forms of these salts are obtained. Their ass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5735b9167169163a382a5069804527a2
https://doi.org/10.1039/ft9928801017
https://doi.org/10.1039/ft9928801017
Publikováno v:
J. Chem. Soc., Faraday Trans.. 88:1009-1015
Thermodynamic functions for the reaction of lasalocid in a chloroform phase with alkali-metal cations in a water phase have been obtained using various experimental methods. Extraction studies at various pH values afforded the formation constants of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad72c4ff2450d34755781e128002383c
https://doi.org/10.1039/ft9928801009
https://doi.org/10.1039/ft9928801009
Publikováno v:
The Journal of Physical Chemistry. 95:3653-3662
Gibbs functions, enthalpies, entropies, and volumes of reaction for the reaction of the bacterial ionophore monensin with alkali-metal cations in various water-organic biphasic solvent systems are obtained by using various experimental methods. In ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::307f885ca69a86c2aea5b6922cf4dda2
https://doi.org/10.1021/j100162a041
https://doi.org/10.1021/j100162a041
Autor:
Jean Juillard, Yvon Pointud
Publikováno v:
J. Chem. Soc., Faraday Trans.. 86:3395-3398
Complexation in methanol of Mn2+, Fe2+, Co2+, Ni2+ and Zn2+ cations by lasalocid and salicylic acid has been studied using reaction calorimetry. Formation of the two successive complexes AM+ and A2M of the acid ligand, AH, with cations M2+ has previo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a7fc11cdb295910a9357ceb6d771936
https://doi.org/10.1039/ft9908603395
https://doi.org/10.1039/ft9908603395