Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Guilherme M. Martins"'
Publikováno v:
Química Nova, Vol 48, Iss 1 (2024)
This review provides an overview of the recent progress in organic electrosynthesis in Brazil, ranging from 2013 to 2023. By highlighting the principles, applications, and limitations of various electrosynthetic methodologies, this article aims to co
Externí odkaz:
https://doaj.org/article/5ef6e39a4a79450087b74beee42ed775
Autor:
Carlos V. Doerner, Marcos R. Scheide, Celso R. Nicoleti, Daniele C. Durigon, Vinícius D. Idiarte, Martinho J. A. Sousa, Samuel R. Mendes, Sumbal Saba, José S. S. Neto, Guilherme M. Martins, Jamal Rafique, Antonio L. Braga
Publikováno v:
Frontiers in Chemistry, Vol 10 (2022)
We report an electrochemical oxidative intramolecular cyclization reaction between 2-alkynylphenol derivatives and different diselenides species to generate a wide variety of substituted-benzo[b]furans. Driven by the galvanostatic electrolysis assemb
Externí odkaz:
https://doaj.org/article/b37e64a42ff84ef58a4392fffd84bb48
Autor:
Guilherme M. Martins, Marcela F. Bordaberry, Zélia M.S Corrêa, Michel B. Mânica, Juliano C. Costa, Nelson Telichevesky, Ítalo M. Marcon
Publikováno v:
Jornal de Pediatria, Vol 77, Iss 4, Pp 327-330 (2001)
OBJETIVO: comparar os resultados de um teste de visão de cores padrão (teste de Ishihara) com um teste criado pelos autores (teste do giz de cera) na detecção da discromatopsia congênita. MÉTODOS: foi realizado um estudo transversal com 712 cri
Externí odkaz:
https://doaj.org/article/43258a554ab84736ae7a2277ad47342d
Autor:
Ayesha Murtaza, Zia Ulhaq, Bahareh Shirinfar, Sadia Rani, Samina Aslam, Guilherme M. Martins, Nisar Ahmed
Publikováno v:
The Chemical Record.
Autor:
Ayesha Murtaza, Zia ulhaq, Bahareh Shirinfar, Sadia Rani, Samina Aslam, Guilherme M. Martins, Nisar Ahmed
C-H bond functionalization generates molecular complexity in single-step transformation. However, the activation of C-H bonds requires expensive metals or stoichiometric amounts of oxidizing/reducing species. In many cases, they often require pre-fun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::828fd83b9a4150b9a89f0a90f6c20337
https://doi.org/10.26434/chemrxiv-2023-kmb19-v2
https://doi.org/10.26434/chemrxiv-2023-kmb19-v2
Autor:
Samuel R. Mendes, Guilherme M. Martins, William A. B. Santos, Pedro P. de Castro, Fernando R. Xavier, Antonio L. Braga
Publikováno v:
Synthesis.
An electrochemical synthesis of flavanones via oxa-Michael addition using silver electrode as a sacrifice is reported. This electrosynthetic system showed good yields, broad substrate scope, and good functional group tolerance. Additionally, the meth
Autor:
Ayesha Murtaza, Zia ulhaq, Bahareh Shirinfar, Sadia Rani, Samina Aslam, Guilherme M. Martins, Nisar Ahmed
The electrochemical generation of molecular complexity via CH bond transformations without pre-functionalization of molecules, stoichiometric amounts of oxidizing/reducing species or precious metal catalysts, represent a highly sustainable technology
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3f88b2a54e00bfe28f484898e4c125e
https://doi.org/10.26434/chemrxiv-2023-kmb19
https://doi.org/10.26434/chemrxiv-2023-kmb19
Autor:
Vinícius R. D. Pereira, Marco A. M. Bezerra, Mauro R. B. P. Gomez, Guilherme M. Martins, Adilson D. da Silva, Kleber T. de Oliveira, Rodrigo O. M. A. de Souza, Giovanni W. Amarante
Publikováno v:
RSC Advances. 12:30120-30124
A concise synthesis of molnupiravir in a one-pot two-step approach starting from uridine is described. Formally, herein, two sets of one-pot two-reaction steps introducing simplicity for purifications and using chemically available reagents are prese
Autor:
Guilherme M. Martins, Maika J. Lazzaris, Antonio L. Braga, Fernando R. Xavier, Samuel R. Mendes
Publikováno v:
European Journal of Organic Chemistry. 2021:4411-4416
Publikováno v:
Ceramics International. 47:15202-15209
In this work, Gd2Ge2O7 polymorphs were obtained by solid-state reactions at 1100–1300 °C. Structural and vibrational features were investigated by X-ray diffraction and Raman spectroscopy. For the triclinic (space group P1) polymorph, all the pred