Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Marc Daumas"'
Publikováno v:
Organic Letters. 21:8205-8210
Here, we report a general method for the synthesis of quaternary and tertiary difluoromethylated compounds and their vinylfluoride analogues. The strategy, which relies on a two-step sequence featuring a C-selective electrophilic difluoromethylation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa3f5c36a991a3df7ebaaba6b350f085
https://doi.org/10.1021/acs.orglett.9b02887
https://doi.org/10.1021/acs.orglett.9b02887
Autor:
Michael Smietana, Oscar Gayraud, Martin Cattoen, Bilal Siddiq, Stellios Arseniyadis, Vincent Ferey, Marc Daumas, Silvia Anselmi, Nicolas Duchemin, Roberto Buccafusca
Publikováno v:
Organic letters. 22(15)
A highly enantioselective synthesis of a-branched acrylonitriles is reported featuring a one-pot sequential asymmetric Michael addition/retro-Dieckmann/retro-Michael fragmentation cascade. The method, which relies on a solid, bench-stable and commerc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c43697c4e0345a502abdc582689447cb
https://pubmed.ncbi.nlm.nih.gov/32790425
https://pubmed.ncbi.nlm.nih.gov/32790425
Autor:
Marc Daumas, Claire Andersen, Amandine Guérinot, Patrick Bernardelli, Janine Cossy, Vincent Ferey
Publikováno v:
Organic Letters
Organic Letters, American Chemical Society, 2020, 22 (15), pp.6021-6025. ⟨10.1021/acs.orglett.0c02115⟩
Organic Letters, American Chemical Society, 2020, 22 (15), pp.6021-6025. ⟨10.1021/acs.orglett.0c02115⟩
The development of a copper-catalyzed cross-coupling between primary and secondary (pseudo)halides and bicyclopentyl Grignard reagents is reported. Highly strained bicyclopentanes can be cross-coupled with a large panel of primary alkyl mesylates and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c6520c10282caa7950309bcc33425d0
https://hal.archives-ouvertes.fr/hal-03197964
https://hal.archives-ouvertes.fr/hal-03197964
Autor:
Nicolas Duchemin, Martin Cattoen, Oscar Gayraud, Silvia Anselmi, Bilal Siddiq, Roberto Buccafusca, Marc Daumas, Vincent Ferey, Michael Smietana, Stellios Arseniyadis
A highly enantioselective synthesis of α-branched acrylonitriles is reported featuring an unprecedented formal cross Rauhut-Currier reaction consisting of an asymmetric Michael addition/retro-Dieckmann/retro-Michael fragmentation cascade. The method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c8ec146edf73d823f31cb6f042f0041
https://doi.org/10.26434/chemrxiv.12185535.v1
https://doi.org/10.26434/chemrxiv.12185535.v1
Autor:
Amandine Guérinot, Patrick Bernardelli, Janine Cossy, Vincent Ferey, Marc Daumas, Claire Andersen
Publikováno v:
Organic Letters
Organic Letters, American Chemical Society, 2019, 21 (7), pp.2285-2289. ⟨10.1021/acs.orglett.9b00579⟩
Organic Letters, American Chemical Society, 2019, 21 (7), pp.2285-2289. ⟨10.1021/acs.orglett.9b00579⟩
International audience; A cobalt-catalyzed cross-coupling between alkyl iodides and cyclopropyl, cyclobutyl, and alkenyl Grignard reagents is disclosed. The reaction allows the introduction of strained rings on a large panel of primary and secondary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::775f8d09503d72015b58b65544c79cd7
https://hal.archives-ouvertes.fr/hal-02533172
https://hal.archives-ouvertes.fr/hal-02533172
Publikováno v:
Innovations in Systems and Software Engineering. 6:173-179
We provide bounds on the probability that accumulated errors were never above a given threshold on numerical algorithms. Such algorithms are used, for example, in aircraft and nuclear power plants. This report contains simple formulas based on Levy's
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e18ec340674e95f815e3914517cd6d6d
https://doi.org/10.1007/s11334-010-0128-x
https://doi.org/10.1007/s11334-010-0128-x
Publikováno v:
Techniques et sciences informatiques. 27:719-733
Graphics Processing Units are now powerful and flexible systems supporting 8, 16 or 32 bit floating point operations. Technical documentation provided by manufacturers (ATI and Nvidia) is not sufficient concerning the various floating point operators
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65fb3469116cbd2ab44e2756656347fa
https://doi.org/10.3166/tsi.27.719-733
https://doi.org/10.3166/tsi.27.719-733
Autor:
Marc Daumas, Paraskevas Evripidou
Publikováno v:
International Journal of Parallel Programming. 28:103-131
The selection problem has been studied extensively on sequential machines. A linear average time solution and a linear worst-case solution are considered as the standard by most researchers. Theoretical work is also available on parallel models, but
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05678ad26976b135b1f2826f7e18b945
https://doi.org/10.1023/a:1007511827694
https://doi.org/10.1023/a:1007511827694
Autor:
Marc Daumas, David W. Matula
Publikováno v:
IEEE Transactions on Computers. 46:623-629
The dot product operation is very prevalent in scientific computation and has therefore been incorporated as a primitive operation in some languages. The implementation of the dot product operation by a sequence of IEEE standard multiplications and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98b27b863b160cadcfc1289f53e418d2
https://doi.org/10.1109/12.589241
https://doi.org/10.1109/12.589241
Autor:
David Berthelot, Marc Daumas
Publikováno v:
Reliable Computing. 3:219-227
What will prevent most users to turn from standard arithmetic to interval arithmetic is the common belief that on any real-life program, interval arithmetic will return most pessimistic bounds to their problem. Although some adequate set of refinemen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::338502cc4bef169a31f10a17fa590c5c
https://doi.org/10.1023/a:1009962521566
https://doi.org/10.1023/a:1009962521566