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EDIÇÃO ATUAL vol. 46, No. 8, 2023



Artigo de Capa
Quim. Nova 2023, 46(8), 798-817

Recentes avanços na adição eletrofílica de organocalcogênios a alquenos

Luana da Silva Gomes; Vanessa Nascimento*

The graphical abstract describes the general scheme of addition reactions promoted by electrophilic chalcogenic reagents to alkenes.

http://dx.doi.org/10.21577/0100-4042.20230045

Publicado online: abril 26, 2023
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Total access: 1014

Artigo de Contra Capa
Quim. Nova 2023, 46(8), 828-835

A bioquímica por trás da Covid-19: desenvolvimento e aplicação de webquest direcionada ao ensino remoto emergencial

Noeli S. M. Silva; Carolina Sotério; Fernanda Canduri; Salete Linhares Queiroz*

Development of media and information literacy of undergraduate students by the means of a WebQuest focusing on Biochemistry and COVID-19.

http://dx.doi.org/10.21577/0100-4042.20230044

Publicado online: abril 17, 2023
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Total access: 930

Artigo Quim. Nova 2023, 46(8), 765-770

 

Prediction of anti-diabetic alogliptin stability by isothermal studies

Charise Dallazem BertolI,II,III,*; Gabriel FelimbertiII; Karini da RosaII; Eliamar Ceresoli RizzonIV; Rafael Nicolay PereiraV; Luiz Carlos KreutzVI; Pedro Eduardo FroelichIII


Isothermal stability was evaluated using TGA and an oven followed by LC-PDA. ALG follows zero-order degradation kinetics. The degraded drug was less toxic than the undegraded one.

http://dx.doi.org/10.21577/0100-4042.20230050

Publicado online: maio 10, 2023
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Total access: 651

Quim. Nova 2023, 46(8), 771-777

 

Applications of nmr and theoretical calculations to study the O-H∙∙∙N intramolecular hydrogen bond effect on the conformational equilibrium of cis‑3‑n‑ethylaminocyclohexanol and cis-3-n,n-diethylaminocyclohexanol

Paulo R. de OliveiraI,*; Roberto RittnerII; Palimecio G. Guerrero Jr.I; Patrick R. BatistaII; Gustavo J. CostaIII


Topological analysis by QTAIM molecular graphics, NCI isosurfaces and reduced density gradient graph for cis-3-N-ethylaminocyclohexanol (a, b and c) and cis-3-N,N-diethylaminocyclohexanol (a', b' and c') rotamers.

http://dx.doi.org/10.21577/0100-4042.20230051

Publicado online: maio 12, 2023
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Total access: 801

Quim. Nova 2023, 46(8), 778-784

 

Functional and technological properties of coffee mucilage (Coffea arabica) and its application in edible films

Daiane Bernardi Machado*; Rafael Augustus de Oliveira


The process to produce the mucilage films started with the harvest of cherry coffee fruits, processing and remotion of the mucilage from the beans. Then, the mucilage was frozen and lyophilized for the production and characterization of the films.

http://dx.doi.org/10.21577/0100-4042.20230052

Publicado online: maio 17, 2023
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Total access: 679

Quim. Nova 2023, 46(8), 785-790

 

Diffusion study of NACL and KCL at the solution/olive interface: mathematical modeling using the finite element method and self-organizing feature map (SOFM)-type neural networks

Dionisio BorsatoI,*; Marco A. J. ClementeI; Heloisa H. P. SilvaI; Nathan F. SilvaI; Julia W. CamposI; Eduardo G. de SousaI; Hágata C. SilvaI; Karina B. AngilelliI; Ana C. G. MantovaniII; Rafael G. MantovaniIII


Mathematical modeling of the diffusion in the stationary film during the salting process.

http://dx.doi.org/10.21577/0100-4042.20230053

Publicado online: maio 18, 2023
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Total access: 646

Quim. Nova 2023, 46(8), 791-797

 

Electron withdrawing group effect on biological activities of pyrimidine hybrids as potential anti-matrix metalloproteinase-7

Abel Kolawole OyebamijiI,*; Sunday Adewale AkinteluII; Kehinde Abraham OdeladeIII; Babatunde AdetuyiIII; Emmanuel Temitope AkintayoI,IV; Cecillia Olufunke AkintayoI,V; Banjo SemireVI; Jonathan Oyebamiji BabalolaVII


Observation of the role of ligand in the active site of the receptor resulted into series of interactions which depict the inhibitory ability of the docked ligand toward the studied receptor.

http://dx.doi.org/10.21577/0100-4042.20230055

Publicado online: maio 23, 2023
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Total access: 690

Nota Técnica Quim. Nova 2023, 46(8), 818-821

 

Determination of residual methanol and ethanol in biodiesel by 1H-NMR

Samuel J. Santos*; Cassiane E. M. Dutra; Luiz A. M. Fontoura*


Hydrogen NMR is an accurate, precise, quick, easy, and powerful tool to detect and quantify alcohol residues in biodiesel.

http://dx.doi.org/10.21577/0100-4042.20230046

Publicado online: abril 26, 2023
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Total access: 694

Quim. Nova 2023, 46(8), 822-827

 

Guia detalhado para montagem própria de impressoras 3D

Mateus V. Pereira; Reverson F. Quero; Dosil P. de Jesus; Juliano A. Bonacin*


In this work, we present a detailed guide for assembling a 3D printer to contribute to the popularization of 3D printing in the field of Chemistry.

http://dx.doi.org/10.21577/0100-4042.20230057

Publicado online: maio 23, 2023
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Total access: 761

Educação Quim. Nova 2023, 46(8), 836-843

 

Uma análise do processo de elaboração de perguntas produzidas por licenciandos em química a partir da literatura de divulgação científica

Pedro R. M. da Silva; Flávio Schifino; Carla Sirtori; Camila G. Passos; e Nathália M. Simon*


This investigation seeks to analyze the process of elaborating questions produced by undergraduates in the Teaching Program in Chemistry from the reading of chapters of a science communication book.

http://dx.doi.org/10.21577/0100-4042.20230047

Publicado online: maio 8, 2023
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Total access: 635

On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
Química Nova
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