Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Dominique Leca"'
Publikováno v:
Synthesis. 47:3412-3422
An experimental foray into the potential of oxazoles and thiazoles to enter into CpCo-mediated [2+2+2] cycloadditions is described. α,ω-Diynes failed to engage the heterocycles productively, as illustrated by the behavior of the unique cobaltacyclo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::317c5bfead92497ea64668d7440f8bdb
https://doi.org/10.1055/s-0034-1378820
https://doi.org/10.1055/s-0034-1378820
Autor:
Francesca Gaggini, Susan N. Pieniazek, Jérôme Yves Cassayre, Kendall N. Houk, Olivier Loiseleur, Dominique Leca, Jennifer A. R. Luft
Publikováno v:
Synlett. 24:2446-2450
The stereoselectivity of cycloadditions involving 3-methyleneoxindole and 2-azadienes can be controlled by solvent polarity and by Lewis or Bronsted acid catalysis. The improvements in selectivity are advantageous for the synthesis of spiroquinazolin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1915dc9dc1b8c61433cc5c05fe7811c0
https://doi.org/10.1055/s-0033-1340046
https://doi.org/10.1055/s-0033-1340046
Autor:
Matthias Albert, Dominique Leca, Max Malacria, Louis Fensterbank, Kai Song, Emmanuel Lacôte, Monica Grangeio Concalves
Publikováno v:
Synthesis. :1405-1420
A new titanium-mediated domino intramolecular radical vinylation is described. It relies on the radical β-elimination of sulfoximyl and phosphinoyl radicals, and leads efficiently to exo-alkylidene pyrrolidines with one stereogenic center β to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdeb948d85c272ca7ba2ee12c019d4f2
https://doi.org/10.1055/s-2005-865357
https://doi.org/10.1055/s-2005-865357
Publikováno v:
Chemistry - A European Journal. 10:906-916
Reaction of sulfonamides with iodosobenzene leads to phenyliodinanes. A new catalysis reaction of the decomposition of these products in the presence of sulfoxides that allows the smooth synthesis of sulfoximines has been evidenced and studied: coppe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05a429c8092da5ad692aa5c114ce50f3
https://doi.org/10.1002/chem.200305525
https://doi.org/10.1002/chem.200305525
Autor:
Susan N. Pieniazek, Francesca Gaggini, Dominique Leca, Jennifer A. R. Luft, Kendall N. Houk, Olivier Loiseleur, Jérôme Yves Cassayre
Publikováno v:
ChemInform. 45
It is demonstrated that the use of Lewis acids can control the selectivity of the cycloaddition of azadiene (I) and methyleneoxindole yielding either the exo-adduct (III) with catalytic amounts of TfOH or the endo-adduct (IV) with 1 equiv.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67bb3d19d7ac3552235b7727da1a03b2
https://doi.org/10.1002/chin.201412024
https://doi.org/10.1002/chin.201412024
Autor:
Dominique Leca, Tobias Aechtner, Vincent Gandon, Corinne Aubert, and Max Malacria, K. Peter C. Vollhardt
Publikováno v:
Organic Letters. 6:3405-3407
[reaction: see text] Co(2)(CO)(6)-complexed alkynyl pinacolborane derivatives are readily transformed with functional group tolerance into fused arylboronates via the [2 + 2 + 2]cycloaddition to alpha,omega-diynes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9a519cd15e09d6cedb4cdc95c25119e
https://doi.org/10.1021/ol0485823
https://doi.org/10.1021/ol0485823
Publikováno v:
Organic Letters. 4:4093-4095
Sulfonimidates were prepared from sulfinamides and iodosobenzene in a very mild one-pot procedure in good to excellent yields. This reaction allows quick and efficient access to a class of molecules of important synthetic as well as biological and in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66ff13139cc31889db7f9b0e2ed9b198
https://doi.org/10.1021/ol026837b
https://doi.org/10.1021/ol026837b
Autor:
Francesca Gaggini, Dominique Leca, Jennifer A. R. Luft, Olivier Loiseleur, Susan N. Pieniazek, Jérôme Yves Cassayre, K. N. Houk
Publikováno v:
The Journal of organic chemistry. 72(11)
A 5-step total synthesis of microfungal alkaloid (+/-)-lapatin B has been accomplished via a key 2-aza-Diels-Alder reaction. Bronsted acids catalyze the cycloaddition step and provide improved exo selectivity. This synthetic route has been applied to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db3959f3f1bde29901ea5b4d40127c45
https://pubmed.ncbi.nlm.nih.gov/17480097
https://pubmed.ncbi.nlm.nih.gov/17480097
Autor:
Max Malacria, Courtney R. Phillips, Dominique Leca, Louis Fensterbank, Anna L. Vagstad, Aurélie Toussaint, Anne Felim, and Emmanuel Lacôte
Publikováno v:
Organic letters. 8(2)
[reaction: see text] One-pot hypervalent iodine-mediated oxidations of arylsulfinamides to arylsulfonimidates is reported. Contrary to the case of alkylsulfinamides, use of iodosobenzene was not satisfactory. The reaction worked best with diacetoxyio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9906aa5f76945e68234cbccbca6fe4e4
https://pubmed.ncbi.nlm.nih.gov/16408909
https://pubmed.ncbi.nlm.nih.gov/16408909
Autor:
Dominique Leca, Tobias Aechtner, Max Malacria, Vincent Gandon, Corinne Aubert, K. Peter C. Vollhardt
Publikováno v:
ChemInform. 36
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8050c84d061b8e339e0dc22d6c2096b1
https://doi.org/10.1002/chin.200502169
https://doi.org/10.1002/chin.200502169