Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Bernard Waegell"'
Autor:
Sylvaine Jabre-Truffert, Bernard Waegell, Anne-Marie Delmas, Björn Åkermark, Helena Grennberg
Publikováno v:
European Journal of Organic Chemistry. 2000:219-224
Palladium-catalyzed acryloxylation of several cycloalkenes in the presence of the Pd(OAc)(2)/p-benzoquinone/MnO2 catalytic system is reported. This oxidation reaction yields allylic acrylates as the sole products through the intermediacy of an eta(3)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b23c3a044434f5a848e225f53406538
https://doi.org/10.1002/(sici)1099-0690(200001)2000:1<219::aid-ejoc219>3.0.co
https://doi.org/10.1002/(sici)1099-0690(200001)2000:1<219::aid-ejoc219>3.0.co
Autor:
Jörg Rümper, Renaud Villard, Katharina Voigt, Gert Thurau, Bernard Waegell, Stephane Albecq, Stefan Bräse, Armin de Meijere
Publikováno v:
European Journal of Organic Chemistry. 1998:671-678
o-Bromostyrenes 2-Br react with various alkenes in the presence of palladium catalysts to give either substituted indene 6 or o-diethenylbenzene derivatives 3, depending on the reaction conditions. Under oxidative conditions the latter can be cyclize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35d8c47f03322096aedefb08a3fc29a8
https://doi.org/10.1002/(sici)1099-0690(199804)1998:4<671::aid-ejoc671>3.0.co
https://doi.org/10.1002/(sici)1099-0690(199804)1998:4<671::aid-ejoc671>3.0.co
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 35:2579-2590
We describe an original QSPR model called the EVM model (Energy, Volume, Mass) to calculate the glass transition temperature (Tg) of aliphatic acrylate and methacrylate homopolymers using classical molecular mechanics and dynamics. The latter was use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93d8b15de811456c06e08d1e6282e0e8
https://doi.org/10.1002/(sici)1099-0518(19970930)35:13<2579::aid-pola5>3.0.co
https://doi.org/10.1002/(sici)1099-0518(19970930)35:13<2579::aid-pola5>3.0.co
Publikováno v:
Magnetic Resonance in Chemistry. 34:383-388
The reaction of phenalenone with various sulphur-derived nucleophiles gave 1-hydroxy-9-alkyl- or -aryl-thiophenalenes. The complexity of the aromatic 1H and 13C signals does not allow straightforward assignments. These were rendered possible by the u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f4a80d0854e158a1738f61d1b391832
https://doi.org/10.1002/(sici)1097-458x(199605)34:5<383::aid-omr881>3.0.co
https://doi.org/10.1002/(sici)1097-458x(199605)34:5<383::aid-omr881>3.0.co
Autor:
Jean Luc Coudret, Stephan Zöllner, Klaus Dörre, Lionnel Malara, Bernard Waegell, Bart Jan Ravoo, Armin de Meijere, Christian Hanisch
Publikováno v:
Tetrahedron Letters. 37:2425-2428
Ruthenium tetroxide generated in situ under the Sharpless conditions was applied to different hydrocarbons containing cyclopropane groups either spiroanellated or ring-fused. In all cases oxidation occurred exclusively at the positions α to the cycl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da126d8d50d79caf07fcf793f44f5677
https://doi.org/10.1016/0040-4039(96)00325-5
https://doi.org/10.1016/0040-4039(96)00325-5
Publikováno v:
Macromolecules. 29:8954-8959
Described here is a QSPR equation for calculating glass transition temperatures for acrylate and methacrylate polymers, especially those with bulky ester substituents. This approach is based on molecular mechanics calculations and exclusively involve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2b497d96b999aad085da401321f41db
https://doi.org/10.1021/ma961170s
https://doi.org/10.1021/ma961170s
Publikováno v:
Tetrahedron Letters. 36:8775-8778
Bidentate ligands featuring two different nitrogen heterocycles (pyridine, oxazoline, oxazolidine and thiophene) directly linked together or separated by a spacer, have been prepared and used as ruthenium ligands to epoxidize trans -stilbene and to s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e75b125d9d364f6fcf357b7897f8297
https://doi.org/10.1016/0040-4039(95)01873-g
https://doi.org/10.1016/0040-4039(95)01873-g
Publikováno v:
Bulletin of the Chemical Society of Japan. 68:1162-1167
The reaction of gem-dihalogenocyclopropanes derivatives with (tetracarbonyl)(methoxycarbonylato)ferrate(I−) has been investigated; gem-dibromocyclopropanes and gem-chlorobromocyclopropane derivatives are reduced and carbonylated. It could be shown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca9dc05eec557309491a2f2ae95ca2b0
https://doi.org/10.1246/bcsj.68.1162
https://doi.org/10.1246/bcsj.68.1162
A short and practical synthesis of (+)-Amberketal and (−)-epi-8-amberketal from natural (−)-sclareol
Publikováno v:
Tetrahedron Letters. 34:8081-8084
Starting from natural (−)-sclareol (4,) (+)-amberketal (9) and (−)-epi-8-amberketal (10) have been synthesized regioselectively in 4 (24% overall yield) and 5 steps (7% overall yield) respectively, by passing through the same unpurified key inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3e07afab1641306b1e29e031eab1349
https://doi.org/10.1016/s0040-4039(00)61456-9
https://doi.org/10.1016/s0040-4039(00)61456-9
Publikováno v:
Fuel Science and Technology International. 11:141-172
The interaction of phenalenonc and 2-methylindole in presence of stoechiomctric amounts of paratoluenesulfonic acid in methanol under argon, yields twelve compounds which have been spectroscopically characterised. Seven compounds or sets of compounds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee194695e3122accb84c7c3398da9285
https://doi.org/10.1080/08843759308916061
https://doi.org/10.1080/08843759308916061