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Marcos A. P. Martins

Spanish National Research Council

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ACS Omega | 2018

Supramolecular Packing of a Series of N-Phenylamides and the Role of NH···O═C Interactions

Anderson B. Pagliari; Tainára Orlando; Paulo R. S. Salbego; Geórgia C. Zimmer; Manfredo Hörner; Nilo Zanatta; Helio G. Bonacorso; Marcos A. P. Martins

A series of seven N-phenylamides [R–C(O)NHPh, in which R: CH3, C(CH3)3, Ph, CF3, CCl3, CBr3, and H] were used as models in this study. Molecular packing and intermolecular interactions were evaluated by theoretical calculations, solution NMR, and quantum theory of atoms in molecules analyses. Crystallization mechanisms were proposed based on the energetic and topological parameters using the supramolecular cluster as demarcation. Concentration-dependent 1H NMR experiments corroborated the proposed interactions between molecules. For all compounds (except for R: H, which initially formed tetramers), layers (two-dimensional) or chains (one-dimensional) were formed in the first stage of the proposed crystallization mechanisms. The presence of strong intermolecular NH···O=C interactions promoted the first stages. The study in solution provided different values of association constant (Kass) governed by the hydrogen bond NH···O=C, showing that the stronger interactions are directly influenced by the substituent steric hindrance. A correlation between Kass(NH···O=C) from the solution and the NH···O=C interaction energy in the crystal showed a good trend.

Arkivoc | 2006

The structure in the solid state and in solution of 3(5)-trifluoromethyl-4, 5(3)-polymethylenepyrazoles

Marcos A. P. Martins; Nilo Zanatta; Helio G. Bonacorso; Fernanda A. Rosa; Rosa M. Claramunt; Mª Ángeles García; M. Dolores Santa María; José Elguero

Archive | 2013

Nanostructure Evaluation of Ionic Liquid Aggregates by Spectroscopy

Clarissa P. Frizzo; Aniele Z. Tier; Izabelle M. Gindri; Lilian Buriol; Marcos A. Villetti; Nilo Zanatta; Marcos A. P. Martins

15th Brazilian Meeting on Organic Synthesis | 2013

New approach of side chain N-acylation and C-oxidation reactions of CF3-containing 7-amino-8-methylquinolines

Rosália Andrighetto; Helio G. Bonacorso; Carson W. Wiethan; Felipe S. Stefanello; Marcos A. P. Martins; Nilo Zanatta

15th Brazilian Meeting on Organic Synthesis | 2013

New strategy for the synthesis of 4-amine-2-trifluoromethyl pyrroles N-substituted

Estefania da C. Aquino; Nilo Zanatta; Vanessa C. Gariboti; Helio G. Bonacorso; Marcos A. P. Martins

15th Brazilian Meeting on Organic Synthesis | 2013

Aluminum promotes easy access to high substituted trihalomethyl triazolyl homoallylic alcohols

Carson W. Wiethan; Helio G. Bonacorso; Maiara C. Moraes; Rosália Andrighetto; Chaiene R. Belo; Marcos A. P. Martins; Nilo Zanatta

15th Brazilian Meeting on Organic Synthesis | 2013

General pathways for obtainment of halo-containing 1,8- naphthyridines,1,8-naphthyridin-2(1H)-ones and their derivatives

Rosália Andrighetto; Helio G. Bonacorso; Felipe S. Stefanello; Marcos A. P. Martins; Nilo Zanatta

15th Brazilian Meeting on Organic Synthesis | 2013

Selective oxidative aromatization of polyfunctionalized trifluoromethyl substituted chromenones by microwave irradiation

Susiane Cavinatto; Jussara Navarini; Carson W. Wiethan; Everton P. Pittaluga; Fábio M. Luz; Gisele R. Paim; Marcos A. P. Martins; Nilo Zanatta; G Helio Bonacorso.

15th Brazilian Meeting on Organic Synthesis | 2013

Regioselective synthesis of 1,3- and 1,5-substituted pyrazoles and pyrazolynes analogous of Celecoxib

Nilo Zanatta; Marcio M. Lobo; Bruna Canova; Helio G. Bonacorso; Marcos A. P. Martins

15th Brazilian Meeting on Organic Synthesis | 2013

New one-pot and regioselective method for the synthesis of 3-trifluoromethyl-1H-1-phenylpyrazoles

Everton P. Pittaluga; Helio G. Bonacorso; Michele S. Correa; Liliane M. F. Porte; Marcos A. P. Martins; Nilo Zanatta

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