Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Marc J. O. Anteunis"'
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 83:357-368
The 1H-NMR spectra were studied of a series of 2-Me-5-R-5-o1,3-dioxanes (5) (R = H, Me, Et, i.Pr; o of 2-Me-spiro(1,3-dioxane-5,9′-fluorene) (14), of 5-R-4,4-dio-1,3-dioxanes (14) (R = Me, Et, n.Pr, i.Pr and i.Bu) and of 5-R-spiro(1,3-dioxane-4,2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c8a978399a28aaf0ac95098a4cf751e
https://doi.org/10.1002/bscb.19740830907
https://doi.org/10.1002/bscb.19740830907
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 84:333-336
The chair-chair equilibrium in cis-2-methoxy-cis-decalane has been studied by 1H-NMR spectroscopy; the conformer featuring the equatorial methoxyl is the more stable one; ΔG°198 = 1.2 ± 0.1 and ΔG°291 = 1.4 ± 0.2 kcal.mole−1.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b93905996afd38206910293aa47ea07
https://doi.org/10.1002/bscb.19750840407
https://doi.org/10.1002/bscb.19750840407
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 99:118-121
Hydrolysis of 6-(bromomethyl)- 1,2,4-trichloro-3,7,7-trimethoxybicyclo[2.2.1] hept-2-ene with perchloric acid in aqueous ethanol yields inter alia the title compound. X-ray analysis proved the positioning of the substituents to be 6-endo-(bromomethyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89bdfce208fbe350f5847082a08089e1
https://doi.org/10.1002/recl.19800990405
https://doi.org/10.1002/recl.19800990405
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 98:294-297
The barrier (ΔG≠) to ring inversion in the title compound amounts to 56.7 kJ·mol−1 at 299 K. The inversion mechanism is discussed. The barrier was measured by dynamic 13C NMR spectroscopy. The 13C shifts of the title compound have been assigned
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b43e5b4dee21816ca7a17892d95ab10
https://doi.org/10.1002/recl.19790980509
https://doi.org/10.1002/recl.19790980509
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 84:67-75
We have ascertained the structure of the adducts of myrcene and the following carbenes: (i) dichlorocarbene (ii) carbethoxycarbene and (iii) methylene (Simmons-Smith procedure). With dichlorocarbene, the diadduct (2', 2'-dichloro-3 ', 3'-dimethyl)-(1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4d583a69a21db0ac3280efcf42f1988
https://doi.org/10.1002/bscb.19750840107
https://doi.org/10.1002/bscb.19750840107
Autor:
M. Coryn, Marc J. O. Anteunis
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 83:83-91
We have investigated the Prins-reaction of formaldehyde on several cyclic (poly) olefins. The nature (100 and 300 MHz NMR studies; table II) and yields of the resulting 1,3-dioxanic compounds have been carefully assessed (Table I). The results indica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c141e3f32e13d40f63d8c048f3b4c21f
https://doi.org/10.1002/bscb.19740830110
https://doi.org/10.1002/bscb.19740830110
Autor:
A. De Smet, Marc J. O. Anteunis
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 83:467-474
The Prins reaction on myrcene gives very complex mixtures. Neater reactions are met with partially reduced myrcenes and chelotropic adducts of myrcene with SO, and hexafluoroacetone. Some of these may be done on preparative scale. The reactivity is t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e650e74d136f4d83d53d3fe7cde3205
https://doi.org/10.1002/bscb.19740831108
https://doi.org/10.1002/bscb.19740831108
Autor:
M. Coryn, Marc J. O. Anteunis
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 83:133-138
The preferred conformation of cis-bicyclo[6.4.0]-10,12-dioxa-2-dodecene is the one having next to the oxygen of the dioxanic moiety an axial substitution (A, figure 2). This unexpected behaviour stays in contrast to that of the isomeric 3-dodecene an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9e3d304be7acfb6916306de2c58d0ea
https://doi.org/10.1002/bscb.19740830305
https://doi.org/10.1002/bscb.19740830305
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 91:297-300
The 1H nmr spectra of 1,6-anhydro-2-0-tosyl-, 1,6-anhydro-4-0-tosyl- and 1,6-anhydro-2,4-di-O-tosyl-β-D-glucopyranose have been analyzed. The data allow to discriminate between the two monosubstituted levoglucosans.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b14804bfb42d0db012f04276a30b69e5
https://doi.org/10.1002/bscb.19820910406
https://doi.org/10.1002/bscb.19820910406
Autor:
Marc J. O. Anteunis, Nestor A. Rodios
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 90:715-735
The solution conformations of salinomycin and narasin, obtained from 1H nmr spectroscopy, reveal that these ionophores, as most other polyethers, possess a constitution that is predestinated for catching an ion and carry it through the lipid bilayer.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32f954e6b24d77b5018e6d463a00cbff
https://doi.org/10.1002/bscb.19810900708
https://doi.org/10.1002/bscb.19810900708