Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Vera C. M. Duarte"'
Autor:
Vera C. M. Duarte, Luísa Andrade
Publikováno v:
Energies, Vol 17, Iss 16, p 3896 (2024)
Perovskite solar cells (PSCs) are the most rapidly advancing photovoltaic technology in terms of power conversion efficiency. An efficiency of 26.1% was achieved in a decade, which is on par with the efficiency of very mature silicon panels. However,
Externí odkaz:
https://doaj.org/article/08ea7e155b77436da65381abe3d0d386
Publikováno v:
CIÊNCIAVITAE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49cf19e22d956f44675eafdfee4e61ba
https://doi.org/10.1002/er.7476
https://doi.org/10.1002/er.7476
Autor:
Mazhar Amjad Gilani, Vera C. M. Duarte, Hamadeh Tarazi, Ayesha Babar, Ather Farooq Khan, Munawwar Ali Munawwar, Muhammad Yar, Haffsah Iqbal, Mohammed B. Alshammari, Maria J. Alves
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
This study describes an efficient synthesis of a series of novel ethyl 2-[aryl(thiazol-2-yl)amino]acetates (4a-l) from N-arylthiazole-2-amines (3a-l). The reaction conditions were optimized and the best results were obtained when ethyl chloroacetate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cf0c5deb976704388f60de938c790f2
https://hdl.handle.net/1822/51380
https://hdl.handle.net/1822/51380
Autor:
Muhammad Yar, Sadaf Riaz, Vera C. M. Duarte, Syed Babar Jamal, Ayesha Shaukat, Tanzeel Ur Rehman, Maria J. Alves, Islam Ullah Khan, Muhammad Ashraf
Publikováno v:
Bioorganic Chemistry. 57:148-154
A range of novel pyridine 2,4,6-tricarbohydrazide derivatives (4a-4h) were synthesized and its biological inhibition towards α- and β-glucosidases was studied. Most of the compounds demonstrate to be active against α-glucosidase, and quite inactiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f74c45f9750cfae0acf9382de30c01ce
https://doi.org/10.1016/j.bioorg.2014.10.007
https://doi.org/10.1016/j.bioorg.2014.10.007
Autor:
Raquel Mendes, Flora T. Costa, Maria J. Alves, Cristina E. A. Sousa, António Gil Fortes, Vera C. M. Duarte
Publikováno v:
Current Organic Synthesis. 11:182-203
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf81d7f822a548d07109bac66aed7049
https://doi.org/10.2174/15701794113106660074
https://doi.org/10.2174/15701794113106660074
Publikováno v:
Tetrahedron: Asymmetry. 24:1063-1068
Two d -erythrose 1,3-butadienes were reacted with electrophilic achiral t- butyl 2 H -azirine 3-carboxylate giving cycloadducts with good yields and moderate selectivity. The isomers could be separated to give the major ( R )-isomers at C-2 in approx
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85374fe4288fe04a5e1f12089f192095
https://doi.org/10.1016/j.tetasy.2013.05.015
https://doi.org/10.1016/j.tetasy.2013.05.015
Autor:
António Gil Fortes, Maria J. Alves, Jennifer Noro, Juliana Patrícia Moreira Marques Ferreira, Vera C. M. Duarte
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Different electron-rich dienophiles were combined with the imine obtained from 2,4-O-benzylidene-D-erythrose and p-anisidine furnishing enantiomerically pure tetrahydroquinolines, by inverse electron-demand [4 pi + 2 pi] cycloaddition. The imine was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27f6f85d8ce95783ebf70cba5b7e06a6
https://hdl.handle.net/1822/51343
https://hdl.handle.net/1822/51343
Autor:
Vera C. M. Duarte, António Gil Fortes, Flora T. Costa, Nuno M. Micaelo, José A. Martins, M. José Alves
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
A new expeditious preparation of homochiral (-)-1-azafagomine, and (+)-5-epi-1-azafagomine has been devised. Stoodley´s diastereoselective cycloaddition of dienes bearing a 2,3,4,6-tetraacetyl glucosyl chiral auxiliary to 4-phenyl-1,2,4-triazole-3,5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28f162f374b227114dc7e3755b362528
https://doi.org/10.1021/jo201486q
https://doi.org/10.1021/jo201486q
Publikováno v:
Tetrahedron: Asymmetry. 21:1817-1820
Erythrose benzylidene-acetal 1,3-butadienes are studied as partners in Diels–Alder cycloadditions. A high diastereofacial improvement is found in cases where both the alcohol function is protected and a π–π interaction between the diene and die
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9862f1e9959bd33b285a6095a35dc7a
https://doi.org/10.1016/j.tetasy.2010.05.001
https://doi.org/10.1016/j.tetasy.2010.05.001
Publikováno v:
Tetrahedron. 63:11167-11173
Cycloadducts 3 and 4 were treated with tetrabutylammonium fluoride and rapidly suffer cleavage on the three-membered ring to form either pyridin-4(1 H )-one or 1 H -azepin-4(7 H )-one. When R 1 is an oxycarbonyl or a 2-pyridyl group and R 2 is a nega
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4080caacd7e220ee1586859c3ab0b98d
https://doi.org/10.1016/j.tet.2007.08.007
https://doi.org/10.1016/j.tet.2007.08.007