Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Alfonso González Ortega"'
Autor:
Alfonso González Ortega
Publikováno v:
Revista de Historia, Iss 16, Pp 161-191 (1987)
El discurso oficial de los pequeños y medianos productores de café muestra a) una relación inversa entre el grado de diferenciación social y el número y calidad de códigos sociales que se incorporan en la producción discursiva; b) que cuanto m
Externí odkaz:
https://doaj.org/article/51a26b4563b1492a9d15aa741d0ab6e7
Autor:
Laura Matesanz-Niño, David Cuellas, Carla Aguilar-Lugo, Laura Palacio, Alfonso González-Ortega, José G. de la Campa, Cristina Álvarez, Ángel E. Lozano
Publikováno v:
Polymers; Volume 15; Issue 6; Pages: 1333
An optimized synthesis of the monomer 2,2′3,3′-biphenyltetracarboxylic dianhydride, iBPDA, was performed to obtain high molecular weight polymers. This monomer has a contorted structure that produces a non-linear shape, hindering the packing of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50ef2d37e96886e50f6f755d48acd361
http://hdl.handle.net/10261/330519
http://hdl.handle.net/10261/330519
Autor:
Laura Matesanz-Niño, Noelia Esteban, Matthew T. Webb, Aránzazu Martínez-Gómez, Fabián Suárez-García, Alfonso González-Ortega, Jesús A. Miguel, Laura Palacio, Michele Galizia, Cristina Álvarez, Ángel E. Lozano
Producción Científica
A set of linear polymers were synthesized utilizing an electrophilic aromatic substitution reaction (SEAr) between biphenyl and ketone containing electron-withdrawing groups (isatin, IS; N-methylisatin, MeIS; and 4,5-diaz
A set of linear polymers were synthesized utilizing an electrophilic aromatic substitution reaction (SEAr) between biphenyl and ketone containing electron-withdrawing groups (isatin, IS; N-methylisatin, MeIS; and 4,5-diaz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d0679661a59727b87e84ace4497567b
https://doi.org/10.1016/j.polymer.2022.125647
https://doi.org/10.1016/j.polymer.2022.125647
Autor:
Cenit Soto, Javier Carmona, Benny D. Freeman, Laura Palacio, Alfonso González-Ortega, Pedro Prádanos, Ángel E. Lozano, Antonio Hernandez
Publikováno v:
Polymers; Volume 14; Issue 15; Pages: 3176
A set of thermally rearranged mixed matrix membranes (TR-MMMs) was manufactured and tested for gas separation. These membranes were obtained through the thermal treatment of a precursor MMM with a microporous polymer network and an o-hydroxypolyamide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::887721f9faf5ca15489c7ef270708f7b
Autor:
Laura Palacio, Pedro Prádanos, Benny D. Freeman, Cenit Soto, Edwin S. Torres-Cuevas, Antonio Hernández, Angel E. Lozano, Alfonso González-Ortega
Publikováno v:
Polymers
Volume 13
Issue 6
UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname
Polymers, Vol 13, Iss 931, p 931 (2021)
Digital.CSIC. Repositorio Institucional del CSIC
Volume 13
Issue 6
UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname
Polymers, Vol 13, Iss 931, p 931 (2021)
Digital.CSIC. Repositorio Institucional del CSIC
Producción Científica
A hydroxypolyamide (HPA) manufactured from 2,2-bis(3-amino-4-hydroxy phenyl)-hexafluoropropane (APAF) diamine and 5′-terbutyl-m-terphenyl-4,4′′-dicarboxylic acid chloride (tBTpCl), and a copolyimide produced by stoc
A hydroxypolyamide (HPA) manufactured from 2,2-bis(3-amino-4-hydroxy phenyl)-hexafluoropropane (APAF) diamine and 5′-terbutyl-m-terphenyl-4,4′′-dicarboxylic acid chloride (tBTpCl), and a copolyimide produced by stoc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::467334a347790fed05fd2cc08aa1919b
Autor:
Cenit Soto, Edwin S. Torres-Cuevas, Alfonso González-Ortega, Laura Palacio, Pedro Prádanos, Benny D. Freeman, Ángel E. Lozano, Antonio Hernandez
Publikováno v:
Polymers, Vol 13, Iss 4343, p 4343 (2021)
Digital.CSIC. Repositorio Institucional del CSIC
instname
Polymers
Polymers; Volume 13; Issue 24; Pages: 4343
Digital.CSIC. Repositorio Institucional del CSIC
instname
Polymers
Polymers; Volume 13; Issue 24; Pages: 4343
Producción Científica
Mixed matrix membranes (MMMs) consisting of a blend of a hydroxypolyamide (HPA) matrix and variable loads of a porous polymer network (PPN) were thermally treated to induce the transformation of HPA to polybenzoxazole (β
Mixed matrix membranes (MMMs) consisting of a blend of a hydroxypolyamide (HPA) matrix and variable loads of a porous polymer network (PPN) were thermally treated to induce the transformation of HPA to polybenzoxazole (β
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2c20651cc1e437b4714583bc109e823
https://doi.org/10.3390/polym13244343
https://doi.org/10.3390/polym13244343
Publikováno v:
Organic Letters. 18:1972-1975
The synthesis of seven-membered nitrogen heterocycles by silyl-aza-Prins cyclization is described. The process provides trans-azepanes in high yields and good to excellent diastereoselectivities. Moreover, the reaction outcome is dependent on the Lew
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad47aa4f279579bfb7e37782fc6fc875
https://doi.org/10.1021/acs.orglett.6b00538
https://doi.org/10.1021/acs.orglett.6b00538
Autor:
Asunción Barbero, Alberto Diez-Varga, Patricia Val, Héctor Barbero, Francisco J. Pulido, Alfonso González-Ortega, Joaquín R. Morán
Publikováno v:
RSC Advances. 5:49541-49551
Vinylsilyl alcohols undergo intramolecular cyclization to provide di-, tri- or tetrasubstituted-tetrahydrofurans. The influence of the number and position of substituents in the stereoselectivity of the process has been studied. Moreover, DFT calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4a2bfe33f6958e87cd65e670aa6e4ea
https://doi.org/10.1039/c5ra06640a
https://doi.org/10.1039/c5ra06640a
Autor:
Alberto Diez-Varga, Francisco J. Pulido, Asunción Barbero, Alfonso González-Ortega, Héctor Barbero
Publikováno v:
Chemistry – A European Journal. 20:14112-14119
Two different mechanism pathways are observed for the reaction of allylsilyl alcohols 1 and aldehydes in the presence of trimethylsilyl trifluoromethanesulfonate (TMSOTf). In the case of allylsilyl alcohols without allylic substituents, the reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cacb8eb17e9a4f6606e9ba62cb88f549
https://doi.org/10.1002/chem.201403421
https://doi.org/10.1002/chem.201403421
Publikováno v:
ChemInform. 47
The synthesis of seven-membered nitrogen heterocycles by silyl-aza-Prins cyclization is described. The process provides trans-azepanes in high yields and good to excellent diastereoselectivities. Moreover, the reaction outcome is dependent on the Lew
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd6d926450162c94c236369b497da721
https://doi.org/10.1002/chin.201638180
https://doi.org/10.1002/chin.201638180