Zobrazeno 1 - 10 of 124 pro vyhledávání: '"David Guijarro"'
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Akademický článek
Chiral β-Amino Alcohols as Ligands for the Ruthenium-Catalyzed Asymmetric Transfer Hydrogenation of N-Phosphinyl Ketimines
Autor: Óscar Pablo, David Guijarro, Miguel Yus
Publikováno v: Applied Sciences, Vol 2, Iss 1, Pp 1-12 (2012)
Some chiral β-amino alcohols have been evaluated as potential ligands for the ruthenium-catalyzed asymmetric transfer hydrogenation (ATH) of N-phosphinyl ketimines in isopropyl alcohol. The ruthenium complex prepared from [RuCl2(p-cymene)]2 and (1S,
Externí odkaz: https://doaj.org/article/6690fd6db7e347be91460b45dbb17b22
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5
Visible-light-mediated decarboxylative (E)-alkenylation of aliphatic carboxylic acids with aryl styryl sulfones under metal-free conditions
Autor: Sarah-Jayne Burlingham, David Guijarro, Irene Bosque, Rafael Chinchilla, Jose C. Gonzalez-Gomez
Publikováno v: Organic & Biomolecular Chemistry. 20:7923-7928
The decarboxylative alkenylation of aliphatic carboxylic acids with aryl styryl sulfones is efficiently catalyzed by riboflavin tetraacetate under visible light irradiation at room temperature. This metal-free protocol is cost-efficient, environmenta
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c8ce036be0c038fa6c111be75ad3369
https://doi.org/10.1039/d2ob01360f
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6
Cross-dehydrogenative coupling involving benzylic and allylic C–H bonds
Autor: Jose C. Gonzalez‐Gomez, Irene Bosque, Francisco Alonso, Rafael Chinchilla, David Guijarro
Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
In recent years, the cross-dehydrogenative coupling (CDC) has demonstrated to be a powerful synthetic tool to form C–C bonds from two C–H bonds. This high atom-economic transformation is an attractive alternative to the classical substitution and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30fd6d751a2a91f3601834eb60f550b7
https://doi.org/10.1039/d0qo00587h
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7
Synthesis of Propargylamines by Cross-Dehydrogenative Coupling
Autor: Francisco Alonso, David Guijarro, Rafael Chinchilla, Jose C. Gonzalez‐Gomez, Irene Bosque
Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
Propargylamines are versatile compounds for heterocyclic synthesis, some of which are current drugs prescribed to treat patients with Parkinson’s disease. There are different methods to synthesize propargylamines, however, modern chemistry has move
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95e65eae53cc513519ed7ed2a827d66c
https://doi.org/10.2174/2213346106666190916104701
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8
Synthesis of Allylic Amines by Asymmetric Transfer Hydrogenation of α,β-Unsaturated N-(tert-Butylsulfinyl)imines
Autor: David Guijarro, Yeshua Sempere, Débora Ruiz-Martínez, Elisabet Selva, Óscar Pablo
Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
Primary allylic amines with enantiomeric excesses from 97 to >99% were prepared by asymmetric transfer hydrogenation of α,β-unsaturated N-(tert-butylsulfinyl)ketimines followed by removal of the sulfinyl group. The effect caused by different substi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c66bfb1291ec975457542bdccea75627
https://doi.org/10.1021/acs.joc.7b02472
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9
Zn/MeOH-Mediated Practical and Easy Detritylation of Protected 1-Trityltetrazoles
Autor: Cherif Behloul, Carmen Nájera, David Guijarro, Miguel Yus, Kenza Bouchelouche, Saadia Benseghir, Yasmine Hadji
Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
A practical and low-cost method for the detritylation of 1-titryltetrazoles using zinc and methanol is described. This procedure is versatile and efficient in the deprotection of several protected tetrazoles bearing aliphatic, aromatic, and heteroaro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f21c7cf40d658578733033c4f427569b
https://doi.org/10.1055/s-0035-1561609
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10
Indium-Mediated Cleavage of the Trityl Group from Protected 1H-Tetrazoles
Autor: Carmen Nájera, Cherif Behloul, Francisco Foubelo, Kenza Bouchelouche, David Guijarro, Miguel Yus
Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
On treatment with indium metal in MeOH–THF, trityl groups undergo reductive removal from 1H-protected tetrazoles (including aliphatic, aromatic, and heteroaromatic substituents), affording the corresponding free tetrazoles in excellent yields, with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87667e5b37a86a0cfe2a5a54a1062402
https://doi.org/10.1055/s-0034-1379933
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