Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Elizabeth M. Valentín"'
Autor:
Nicole D. Bartolo, Krystyna M. Demkiw, Jacquelyne A. Read, Elizabeth M. Valentín, Yingying Yang, Alexandra M. Dillon, Chunhua T. Hu, Michael D. Ward, K. A. Woerpel
Publikováno v:
J Org Chem
The additions of the highly reactive reagent, allylmagnesium halide, to α-substituted acyclic chiral ketones proceeded with high stereoselectivity. The stereoselectivity cannot be analyzed by conventional stereochemical models because these reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa80a442430233715ec40c60e9f63359
https://doi.org/10.1021/acs.joc.1c02844
https://doi.org/10.1021/acs.joc.1c02844
Autor:
Nicole D. Bartolo, Krystyna M. Demkiw, Alya A. Arabi, Chunhua T. Hu, Elizabeth M. Valentín, K. A. Woerpel
Publikováno v:
J Org Chem
The stereoselectivities of reactions of allylmagnesium reagents with chiral ketones cannot be easily explained by stereochemical models. Competition experiments indicate that the complexation step is not reversible, so nucleophiles cannot access the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01506997b7dcf820b92dd28c56db49cc
https://pubmed.ncbi.nlm.nih.gov/33978419
https://pubmed.ncbi.nlm.nih.gov/33978419
Publikováno v:
Chem Rev
This review describes the additions of allylmagnesium reagents to carbonyl compounds and to imines, focusing on the differences in reactivity between allylmagnesium halides and other Grignard reagents. In many cases, allylmagnesium reagents either re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0471e3f3b008c97f717bd72e1dd11eb6
https://europepmc.org/articles/PMC7018623/
https://europepmc.org/articles/PMC7018623/
Publikováno v:
Synthesis. 49:3237-3246
The additions of allylmagnesium reagents to carbonyl compounds are important methods in synthetic organic chemistry, but the mechanisms of these reactions are likely to be distinct from mechanisms followed by other organomagnesium reagents. Additions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c1e5f67fb9c13d9242323425759552e
https://doi.org/10.1055/s-0036-1588427
https://doi.org/10.1055/s-0036-1588427
Autor:
Jaileen Rentas, Elizabeth M. Valentín, Keyla F. Morales-Rivera, Alejandra Cruz-Montañez, Jose A. Prieto, Wildeliz Torres
The enantioselective synthesis of polypropionates continues to be an attractive realm for the synthetic chemists mostly due to the challenges presented by the number of consecutive stereogenic centers contained within the aliphatic chain. Over the ye
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f60f534f54507e86fab16f7886251fbf
https://europepmc.org/articles/PMC5693354/
https://europepmc.org/articles/PMC5693354/
Publikováno v:
Organic Letters
The selectivities of nucleophilic substitution reactions of tetrahydropyran acetals promoted by trimethylsilyl trifluoromethanesulfonate depend upon the reaction solvent. Polar solvents favor the formation of S(N)1 products, while nonpolar solvents f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::864eec6a0225668486d67e90e451f836
http://europepmc.org/articles/PMC4334250
http://europepmc.org/articles/PMC4334250
Publikováno v:
Tetrahedron Letters. 53:2199-2201
An efficient non-aldol convergent synthesis of the C14-C25 polyketide fragment of bafilomycin A(1) was completed in 16% overall yield and 8 steps in its longest linear sequence. This synthesis highlights the formation of the key fragments using a thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::713ef1bc99c099e0ba1f5a4ee3803258
https://doi.org/10.1016/j.tetlet.2012.02.067
https://doi.org/10.1016/j.tetlet.2012.02.067
Publikováno v:
ChemInform. 46
The stereochemical outcome of glycosylations of tetrahydropyran O-acetals depends strongly on the solvent polarity.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39eb3ad04e0078fe7a3b339de972c19f
https://doi.org/10.1002/chin.201502190
https://doi.org/10.1002/chin.201502190
Publikováno v:
Journal of Chemical Education. 86:1315
Esters are often employed as artificial flavorings in foods and drinks, since the more volatile ones possess distinctive odors characteristic of common fruits. The present laboratory experiment introduces students to the esterification method in whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1da46a5d5df391087ef8491a193b362d
https://doi.org/10.1021/ed086p1315
https://doi.org/10.1021/ed086p1315
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