Zobrazeno 1 - 10
of 299
pro vyhledávání: '"carbolithiation"'
Autor:
Magdalena Ciechańska, Anna Wrona-Piotrowicz, Karolina Koprowska, Anna Makal, Janusz Zakrzewski
Publikováno v:
Molecules, Vol 27, Iss 12, p 3930 (2022)
In this paper, we describe the lithiation of N-benzylpyrene-1-carboxamide with RLi-TMEDA. We found that the reaction outcome strongly depends on the electrophile used in the quenching step. The electrophile can be introduced at either the benzylic po
Externí odkaz:
https://doaj.org/article/af47ce1516fe4cfbbd52bb449a8bd33f
Autor:
Miguel A. Muñoz‐Torres, Fernando Martínez‐Lara, Marta Solas, Samuel Suárez‐Pantiga, Roberto Sanz
Publikováno v:
Advanced Synthesis & Catalysis. 364:3716-3724
The combination of organolithium chemistry with gold catalysis has enabled the development of a synthetic strategy for accessing polysubstituted indoles and carbazoles from readily available starting materials. This method is based on a “back-to-fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fecfb027ef657872fb9bab0c7dfcab5
https://doi.org/10.1002/adsc.202200824
https://doi.org/10.1002/adsc.202200824
Publikováno v:
Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname
Minerva: Repositorio Institucional de la Universidad de Santiago de Compostela
Universidad de Santiago de Compostela (USC)
Angewandte Chemie (International Ed. in English)
instname
Minerva: Repositorio Institucional de la Universidad de Santiago de Compostela
Universidad de Santiago de Compostela (USC)
Angewandte Chemie (International Ed. in English)
Despite the high relevance of 1,3‐dienes, stereoselective methods to access tetrasubstituted conjugated dienes are still scarce. We here report an efficient and modular approach that provides access to multifunctional tetrasubstituted 1,3‐dienes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a4a12df1b0e357e5dbf6a7c5f88f2a4
https://doi.org/10.1002/ange.202104741
https://doi.org/10.1002/ange.202104741
Autor:
William F. Bailey, Justin D. Fair
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 537-543 (2013)
The preparation of fairly strained carbocyclic ring systems by intramolecular 5-exo-trig ring closure has been well documented, and the absence of proton transfers that would compromise such cyclizations is a hallmark of this chemistry. In an effort
Externí odkaz:
https://doaj.org/article/9a41d800057644d389bb4270a2587ede
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 628-632 (2013)
N-Alkenyl ureas and N-alkenyl carbamates, like other N-acyl enamines, are typically nucleophilic at their β-carbon. However, by incorporating an α-aryl substituent, we show that they will also undergo attack at the β-carbon by organolithium nucleo
Externí odkaz:
https://doaj.org/article/98982f7e816e403c974f2ecd63bc0665
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 313-322 (2013)
In this review we summarize recent developments in inter- and intramolecular enantioselective carbolithiation reactions carried out in the presence of a chiral ligand for lithium, such as (−)-sparteine, to promote facial selection on a C=C bond. Th
Externí odkaz:
https://doaj.org/article/da02a8bab0e0433d82e40bc16f0bf61b
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Ly, Kim Uyen
Carbometalation reactions representa powerful synthetic pathway for the efficientfunctionalization of unsaturated compounds.These organometallic additions (lithium,magnesium, zinc, aluminum etc.), which arecommonly regio- and stereoselective, allow t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______166::a4a52df3175e689577aebd0dc8a025e4
https://theses.hal.science/tel-03711399
https://theses.hal.science/tel-03711399
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 2214-2222 (2012)
We have developed a general synthesis of polysubstituted 1,4-dihydropyridines and pyridines based on a highly regioselective lithiation/6-endo-dig intramolecular carbolithiation from readily available N-allyl-ynamides. This reaction, which has been s
Externí odkaz:
https://doaj.org/article/06ea34a2e9fd438687a3bc78cc20cb00