Zobrazeno 1 - 10
of 134
pro vyhledávání: '"O, Chalvet"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 77:462-466
On decrit la synthese de deux homologues monomethyles du naphto [2,3-a] pyrene. Le 10-methylnaphto[ 2,3-a] pyrene a ete prepare par la reaction d'Elbs a partir du 3-(2,5-dimethylbenzoyl)pyrene; d'autre part, la formylation du naphto [2,3-a] pyrene co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0039e37eda1ad8f66bad2f9c4994886
https://doi.org/10.1002/recl.19580770511
https://doi.org/10.1002/recl.19580770511
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 86:31-34
A new formulation is presented for the delocalisation model in which the effects of environment are considered in an explicit manner. The method permits one to find the successive inversions for the selectivity of reactional sites for the 1-methyl-qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c72858fa7896e2ea4de82b58468e00d
https://doi.org/10.1002/bscb.19770860105
https://doi.org/10.1002/bscb.19770860105
Publikováno v:
Photochemistry and Photobiology. 51:255-262
The 365 nm irradiation of thymine thin films in the presence of pyridopsoralens is shown to induce the formation of cyclobutane thymine dimers, in contrast to other compounds such as 8- and 5-methoxypsoralen. In order to elucidate the mechanism of su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42afbcdd704680e8b012b3dc57b1f11f
https://doi.org/10.1111/j.1751-1097.1990.tb01709.x
https://doi.org/10.1111/j.1751-1097.1990.tb01709.x
Publikováno v:
Tetrahedron. 36:2775-2782
Resume On donne une interpretation de la reactivite chimique, vis a vis de la reaction de Diels-Alder, de deux series de composes dieniques derives du butadiene. Ces deux series presentent une dissymetrie de substitution et different entre elles selo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa41166c8d4ef613e0f003cec5104c54
https://doi.org/10.1016/0040-4020(80)80154-2
https://doi.org/10.1016/0040-4020(80)80154-2
Publikováno v:
Photochemistry and Photobiology. 26:353-356
Using the CNDO/S method, we have studied the lowest singlet ← singlet and triplet ← singlet transition energies of phenazine and its two conjugate acids. The spectra of the conjugate acids are not well reproduced by the calculations unless a wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0467496e143671aa84e48d0347a8c5fd
https://doi.org/10.1111/j.1751-1097.1977.tb07496.x
https://doi.org/10.1111/j.1751-1097.1977.tb07496.x
Publikováno v:
The Journal of Physical Chemistry. 85:473-479
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81ee3c70cca54e56d0a2728a14f06c68
https://doi.org/10.1021/j150605a004
https://doi.org/10.1021/j150605a004
Autor:
J. C. Rayez, O. Chalvet
Publikováno v:
Journal of Heterocyclic Chemistry. 12:691-697
Une etude comparee theorique et experimentale a permis d'obtenir des resultats coherents sur la difference de comportement acido-basique de la proflavine dans l'etat fondamental et dans les etats excites singulet et triplet. On montre notamment une s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::842a2b650d0d2abe497b3a58e95785f0
https://doi.org/10.1002/jhet.5570120415
https://doi.org/10.1002/jhet.5570120415
Publikováno v:
Journal of the American Chemical Society. 96:5038-5045
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::817b7410afcb7a63293236e034763f2b
https://doi.org/10.1021/ja00823a004
https://doi.org/10.1021/ja00823a004
Publikováno v:
The Journal of Physical Chemistry. 81:1913-1917
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60e7cfd2ed47168fc275eb5e2d4b2098
https://doi.org/10.1021/j100535a006
https://doi.org/10.1021/j100535a006
Publikováno v:
Journal of Heterocyclic Chemistry. 11:1013-1016
Plusieurs modeles theoriques ont ete appliques a l'etude de la reactivite de quatre systemes helerocycliques du type imidazo [1,2]azine, et les resultats obtenus ont ete compares.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::304494d0deb66bfaaa330d1b0ffa21bf
https://doi.org/10.1002/jhet.5570110629
https://doi.org/10.1002/jhet.5570110629