Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Jesus M, Pena"'
Autor:
Hélio A. Stefani, Jesus M. Pena, Julio Zukerman-Schpector, Ignez Caracelli, Edward R. T. Tiekink
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 3, Pp o685-o685 (2010)
The tellurium atom in the title bis-ethynyl telluride, Te(C9H7)2 or C18H14Te, is located on a crystallographic twofold axis, the C—Te—C angle being 92.23 (15)°. The dihedral angle between the rings is 87.27 (7)°. In the crystal structure, molec
Externí odkaz:
https://doaj.org/article/dc8e39230b434ab08aa1d6844f06775b
Publikováno v:
ChemistrySelect. 2:9624-9627
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af53f0929c19a5aeb6e58b76c3cf5fa0
https://doi.org/10.1002/slct.201702023
https://doi.org/10.1002/slct.201702023
Autor:
Rayssa P. Oliveira, Luccas Lossano Name, Daniel C. Pimenta, Rodrigo Cella, Karinne E. Prado, Rafael C. Guadagnin, Jesus M. Pena
Publikováno v:
ChemistrySelect. 2:7421-7425
The use of ionic liquid (IL) in Tandem Knoevenagel/Diels-Alder Reaction is an optimization method for one-pot procedures, providing great results under mild conditions. In this paper, four new Lapachone derivatives were obtained using lawsone as subs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13127d7e3fc2f860b637fe3f14938072
https://doi.org/10.1002/slct.201701861
https://doi.org/10.1002/slct.201701861
Publikováno v:
New J. Chem.. 38:3933-3938
Design of experiments was employed to optimize the reaction conditions used to synthesize stilbene derivatives. New Heck conditions were tested using several styrenes and aryldiazonium tetrafluoroborates, generating the desired stilbenes in good yiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e153d7f01c651cdb1835ac18fa36887
https://doi.org/10.1039/c4nj00601a
https://doi.org/10.1039/c4nj00601a
Autor:
Giancarlo V. Botteselle, Jamal Rafique, Marcelo Godoi, Jesus M. Pena, Manuela S. T. Rocha, Antonio L. Braga
Publikováno v:
Asian Journal of Organic Chemistry. 2:746-749
An efficient, fast, and sustainable method for the Fmoc protection of a wide range of aliphatic and aromatic amines is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e9ec4b830ed3acf0a8488970ec8e4ba
https://doi.org/10.1002/ajoc.201300092
https://doi.org/10.1002/ajoc.201300092
Autor:
Giancarlo V. Botteselle, Antonio L. Braga, Jesus M. Pena, Manuela S. T. Rocha, Marcelo Godoi, Jamal Rafique
Publikováno v:
ChemInform. 47
An efficient, fast, and sustainable method for the Fmoc protection of a wide range of aliphatic and aromatic amines is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f472a61899427a40a4914309c57acf3
https://doi.org/10.1002/chin.201628063
https://doi.org/10.1002/chin.201628063
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The palladium catalyzed cross-coupling reaction of phenyltrifluoroborate with a chemoenzymatically derived bromoazidoconduritol, combined with 1,3-dipolar cycloaddition, with a variety of alkynes is described. Fourteen new compounds were synthesized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9da58bbc31db889eccac9da9c3f3565
https://doi.org/10.1007/s11030-010-9237-6
https://doi.org/10.1007/s11030-010-9237-6
Autor:
Kemilla Gueogjian, Marcos N. Eberlin, Hélio A. Stefani, Boniek G. Vaz, Jesus M. Pena, Nicola Petragnani
Publikováno v:
Tetrahedron Letters. 50:5589-5595
A variety of α,β-unsaturated aryl esters were prepared by the direct reaction of unsymmetrical aryltellurides and ethyl acrylate, catalyzed by PdCl 2 via a Heck cross-coupling reaction.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5899edc0c10dc759c1d3b44e5cce445c
https://doi.org/10.1016/j.tetlet.2009.07.092
https://doi.org/10.1016/j.tetlet.2009.07.092
Autor:
Rafael C. Guadagnin, Adriano S. Vieira, Giancarlo V. Botteselle, Jesus M. Pena, Diego Alves, Hélio A. Stefani
Publikováno v:
Journal of the Brazilian Chemical Society. 20:988-992
Apresentamos aqui resultados das reacoes de acoplamento de diteluretos de diarila com sais de ariltrifluoroborato de potassio, usando quantidades cataliticas de Cu(OAc) 2 e bipiridina, em uma mistura de DMSO/H 2 O, sob ar atmosferico. Estas reacoes d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f88cbbf08322a3c923b6080eac8d667b
https://doi.org/10.1590/s0103-50532009000500025
https://doi.org/10.1590/s0103-50532009000500025
Publikováno v:
ChemInform. 45
Optimization of the reaction parameter temperature, solvent, and catalyst loading allows for the development of an improved procedure for the synthesis of title compounds (III).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93ee732c59c52425f0ce1d0270e711e0
https://doi.org/10.1002/chin.201452095
https://doi.org/10.1002/chin.201452095