Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Catherine A. Campos"'
Publikováno v:
Revista +E, Vol 7, Iss 7 (2018)
Este artículo pretende plasmar el quehacer de las universidades estatales costarricenses en el campo de la extensión universitaria a la luz de algunos acontecimientos históricos a nivel mundial. Con el propósito de que la extensión universitaria
Externí odkaz:
https://doaj.org/article/6200f996255c466c9d7667a984546a52
Autor:
Catherine A. Campos, David M. Pinkerton, Brandon L. Ashfeld, Joseph B. Gianino, Antonio J. Lepore
Publikováno v:
The Journal of Organic Chemistry. 79:12083-12095
A titanocene-catalyzed multicomponent coupling is described herein. Using catalytic titanocene, phosphine, and zinc dust, zinc acetylides can be generated from the corresponding iodoalkynes to affect sequential nucleophilic additions to aromatic alde
Publikováno v:
Tetrahedron Letters. 56:5245-5247
Aryl-fused seven membered heterocyclic frameworks appear in a variety of pharmaceutically pertinent compounds. However, only a very few methods for their preparation have been described. This work describes a novel synthesis route to diaryl-fused sev
Autor:
Mary E. Baluyut, Catherine A. Campos, Harlan E. Shannon, Constanze Wiek, Brandon L. Ashfeld, Joseph B. Gianino, Helmut Hanenberg, Karen E. Pollok, Barbara J. Bailey
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 23:6874-6878
Using an innovative approach toward multiple carbon–carbon bond-formations that relies on the multifaceted catalytic properties of titanocene complexes we constructed a series of C1–C7 analogs of curcumin for evaluation as brain and peripheral ne
Publikováno v:
Organic Letters. 13:5680-5683
The titanocene-catalyzed construction of all-carbon substituted tertiary centers directly from aromatic aldehydes is described. The starting aldehyde behaves as a traceless functionality in the formation of multiple carbon-carbon bonds through consec
Publikováno v:
ChemInform. 47
The novel synthesis of the title compounds involves the generation of functionalized aryllithiums from aryl bromides followed by intramolecular cyclization onto an electrophilic nitrile functional group.
Autor:
Joseph B. Gianino, Brandon L. Ashfeld, David M. Pinkerton, Antonio J. Lepore, Catherine A. Campos
Publikováno v:
ChemInform. 46
A titanocene-catalyzed multicomponent coupling is described herein. Using catalytic titanocene, phosphine, and zinc dust, zinc acetylides can be generated from the corresponding iodoalkynes to affect sequential nucleophilic additions to aromatic alde
Publikováno v:
ChemInform. 44
A titanocene-catalyzed multicomponent coupling approach toward β-alkynyl ketones from readily available silyl enol ethers, aldehydes, and iodoalkynes is developed.
Publikováno v:
Organic letters. 15(11)
Herein is described a titanium-catalyzed three-component coupling to assemble β-alkynyl ketones in a single operation. Treatment of an aryl aldehyde with an acetylide and silyl enol ether in the presence of a bifunctional titanocene catalyst enables