Zobrazeno 1 - 10 of 59 pro vyhledávání: '"Marie Paule Simonnin"'
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ChemInform Abstract: Structure and Conformation of Polynitrodiphenylmethanes and Related Carbanions
Autor: Hai-Qi Xie, Jacques Lelievre, Marie-Paule Simonnin, Patrick G. Farrell, François Terrier
Publikováno v: ChemInform. 21
1 H and 13C n.m.r. data are reported for a series of ortho and para nitro-substituted diphenylmethanes and related diphenylmethyl anions. In the case of the neutral molecules, a predominance of the skew conformation is suggested for mono- and di-o ni
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f0339050722ac5cc6bf02eef3e1a8f2
https://doi.org/10.1002/chin.199004043
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3
Wittig–Horner reagents: structural and conformational study of five- and six-membered cyclic phosphonates and their carbanions. Evidence of anomeric effect in anionic species
Autor: Jacqueline Seyden-Penne, Eli Breuer, Marie-José Pouet, Marie-Paule Simonnin, Tekla Bottin-Strzalko
Publikováno v: J. Chem. Soc., Perkin Trans. 2. :1801-1805
A structural and conformational study of the electron-withdrawing substituted phosphonates 2-oxo-1,3,2-dioxaphosphorinanes (1) and (2) and of the related anionic species (3, K+) and (4, K+) in dimethyl sulphoxide has been made. Phosphonates (1) and (
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a85ca3cbd98d29974bee686eb035c741
https://doi.org/10.1039/p29850001801
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4
Ambident nucleophiles. II. Nitrogen-bonded and carbon-bonded σ-complex formation in the reaction of pyrrolide anions with 1,3,5-trinitrobenzene
Autor: Jean-Claude Halle, Marie-Paule Simonnin, F. Debleds, Marie-José Pouet, François Terrier
Publikováno v: Canadian Journal of Chemistry. 60:1988-1995
Reaction of 1,3,5-trinitrobenzene (TNB) with pyrrole, 2,5-dimethyl pyrrole, and 2,4-dimethyl-3-ethyl pyrrole in the presence of a strong base (CH3O−) yields nitrogen- and/or carbon-bonded 1:1 σ-complexes in dimethylsulphoxide (DMSO). Depending on
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f861cb675bf25e5978bf91c3555ab89f
https://doi.org/10.1139/v82-280
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5
Trifluoromethylsulfonyl aryl derivatives: competitive nucleophilic attack at an aromatic carbon and at the sulfur atom of an aromatic SO2CF3 group
Autor: Marie-Paule Simonnin, Jean Morel, Marie-José Pouet, François Terrier
Publikováno v: Canadian Journal of Chemistry. 58:65-71
The reaction of methoxide ion with 2-nitro-4-trifluoromethylsulfonylanisole, 4-nitro-2-triftuoromethylsulfonylanisole and 2,4- bis(trifluoromethylsulfonyl)anisole in DMSO has been studied by 1H and 19F nmr. Evidence for the transient formation of gem
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95c80cfc3da845cc29b027b12bc8b8fb
https://doi.org/10.1139/v80-011
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6
Preparation, structure, and conformation in solution of diacetyl derivatives of 6,7-dimethyl-1,4-dihydroquinoxaline and of dihydropyridotriazines
Autor: Odile Convert, Christian Bellec, Guy Quéguiner, Marie-Paule Simonnin, Nelly Plé, Joseph Armand, Line Boulares
Publikováno v: Canadian Journal of Chemistry. 63:3210-3215
A conformational study of 1,4-diacetyl-1,4-dihydro-6,7-dimethylquinoxaline is carried out by low temperature nmr in CD2Cl2. Important acetyl rotation induced shifts have been observed for the peri and ortho protons. These results, together with low t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4dfec17d4b598dd8e199775a9c28b5c0
https://doi.org/10.1139/v85-531
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7
Structure in the solid state and conformational analysis in solution of 1,4-diacetyl-1,4-dihydro-2,3-diphenylpyrazine, a potential antiaromatic heterocyclic compound
Autor: Marie-Paule Simonnin, Michele Philoche-Levisalles, Joseph Armand, Claudette Bois, Marie-José Pouet
Publikováno v: Canadian Journal of Chemistry. 60:349-354
It is shown by X-ray crystallography that the 1,4-dihydropyrazine skeleton of 1,4-diacetyl-1,4-dihydro-2,3-diphenylpyrazine 2 has a boat shape. The C(2)–C(3) and C(5)–C(6) double bonds are localized; therefore 2 does not exist as an azahomoaromat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a0e81b7bbc4fe9adbe3bfa70001c68da
https://doi.org/10.1139/v82-054
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8
19F and 1H NMR study of five-membered ring triflones and related σ -adducts. Long range fluorine-proton spin spin coupling
Autor: Bernard Decroix, Marie-Paule Simonnin, Jean Morel, François Terrier
Publikováno v: Journal of Fluorine Chemistry. 36:439-448
Fluorine and proton chemical shifts for various trifluoromethylsulfonyl thiophene, selenophene, furan and N-methylpyrrole derivatives are reported and compared with those for nitro analogs. The 19F chemical shift of the SO2CF3group is found to be ins
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a3acedc8f655dc756675c600231ad39
https://doi.org/10.1016/s0022-1139(00)81985-5
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10
Reactivite ambidente de l'anion imidazolate vis-a-vis d'un electrophile aromatique
Autor: F. Debleds, Marie-Paule Simonnin, François Terrier, J.‐C. Halle
Publikováno v: Tetrahedron Letters. 23:4079-4082
The reaction of 1,3,5-trinitrobenzene (TNB) with imidazolide ion (Im-) provides the first example of the ambifunctional nucleophilic reactivity of this anion towards an aromatic electrophile. The N-adduct 1 is formed under kinetic control but the C-a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::380b1380acd55bffad302495960f799e
https://doi.org/10.1016/s0040-4039(00)88352-5
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