Hélio A. Stefani

5.4k total citations
205 papers, 4.3k citations indexed

About

Hélio A. Stefani is a scholar working on Organic Chemistry, Toxicology and Molecular Biology. According to data from OpenAlex, Hélio A. Stefani has authored 205 papers receiving a total of 4.3k indexed citations (citations by other indexed papers that have themselves been cited), including 179 papers in Organic Chemistry, 62 papers in Toxicology and 42 papers in Molecular Biology. Recurrent topics in Hélio A. Stefani's work include Organoselenium and organotellurium chemistry (62 papers), Sulfur-Based Synthesis Techniques (56 papers) and Chemical Synthesis and Analysis (31 papers). Hélio A. Stefani is often cited by papers focused on Organoselenium and organotellurium chemistry (62 papers), Sulfur-Based Synthesis Techniques (56 papers) and Chemical Synthesis and Analysis (31 papers). Hélio A. Stefani collaborates with scholars based in Brazil, Malaysia and United States. Hélio A. Stefani's co-authors include Rodrigo Cella, Nicola Petragnani, Antônio L. Braga, Gilson Zeni, Adriano S. Vieira, J. V. Comasseto, Cláudio Martin Pereira de Pereira, J. Zukerman‐Schpector, Paulo H. Menezes and Flávia Manarin and has published in prestigious journals such as SHILAP Revista de lepidopterología, Accounts of Chemical Research and Antimicrobial Agents and Chemotherapy.

In The Last Decade

Hélio A. Stefani

193 papers receiving 4.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Hélio A. Stefani Brazil 35 3.7k 1.2k 655 388 228 205 4.3k
Lorenzo Testaferri Italy 36 3.8k 1.0× 1.7k 1.4× 494 0.8× 598 1.5× 75 0.3× 182 4.2k
Sangit Kumar India 34 3.0k 0.8× 1.4k 1.2× 231 0.4× 444 1.1× 65 0.3× 98 3.4k
Marcello Tiecco Italy 36 3.7k 1.0× 1.6k 1.4× 503 0.8× 580 1.5× 68 0.3× 169 4.0k
Francesca Marini Italy 32 2.3k 0.6× 1.2k 1.0× 506 0.8× 398 1.0× 57 0.3× 123 3.0k
Jacek Młochowski Poland 26 1.6k 0.4× 1.0k 0.9× 282 0.4× 303 0.8× 104 0.5× 129 2.2k
Luana Bagnoli Italy 29 2.1k 0.6× 1.2k 1.0× 274 0.4× 380 1.0× 57 0.3× 106 2.4k
Derrick L. J. Clive Canada 33 4.1k 1.1× 592 0.5× 1.0k 1.6× 442 1.1× 414 1.8× 217 4.8k
Gilbert Kirsch France 39 3.0k 0.8× 296 0.3× 929 1.4× 167 0.4× 482 2.1× 267 4.5k
Harold W. Moore United States 29 2.8k 0.8× 472 0.4× 850 1.3× 151 0.4× 307 1.3× 175 3.6k
Andrea Temperini Italy 28 1.8k 0.5× 854 0.7× 358 0.5× 317 0.8× 66 0.3× 108 2.1k

Countries citing papers authored by Hélio A. Stefani

Since Specialization
Citations

This map shows the geographic impact of Hélio A. Stefani's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hélio A. Stefani with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hélio A. Stefani more than expected).

Fields of papers citing papers by Hélio A. Stefani

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hélio A. Stefani. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hélio A. Stefani. The network helps show where Hélio A. Stefani may publish in the future.

Co-authorship network of co-authors of Hélio A. Stefani

This figure shows the co-authorship network connecting the top 25 collaborators of Hélio A. Stefani. A scholar is included among the top collaborators of Hélio A. Stefani based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hélio A. Stefani. Hélio A. Stefani is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Cuccovia, Iolanda Midea, et al.. (2025). Colorimetric and fluorometric Seleno-BODIPY sensor for selective palladium detection in solution and on a cotton swab platform. Dyes and Pigments. 248. 113530–113530.
2.
Stefani, Hélio A., et al.. (2024). 2-aryloxazolines inhibit Candida clinical isolates growth and morphogenesis of Candida albicans and Candida tropicalis. SHILAP Revista de lepidopterología. 3. 100062–100062. 1 indexed citations
3.
Rafique, Jamal, Sumbal Saba, Isadora M. de Oliveira, et al.. (2018). Synthesis of Bis(indolyl)methanes Using Fe3O4 Nanoparticle as a Robust, Efficient and Magnetically Recoverable Catalyst Under Solvent-Free Conditions. Revista Virtual de Química. 10(5). 1591–1606. 1 indexed citations
4.
Bastos, E. L., et al.. (2018). Oxazoline as acceptor moiety for excited-state intramolecular proton transfer. Tetrahedron. 74(48). 6866–6872. 2 indexed citations
5.
Vasconcelos, Stanley N. S., et al.. (2018). Synthesis of a Tyr-Tyr Dipeptide Library and Evaluation Against Tumor Cells. Medicinal Chemistry. 14(7). 709–714. 4 indexed citations
6.
Vasconcelos, Stanley N. S., et al.. (2017). Synthesis of a library of glucal-derived triazoles via copper-catalyzed azide–alkyne cyclization. Tetrahedron Letters. 58(9). 884–888. 10 indexed citations
7.
Vasconcelos, Stanley N. S., et al.. (2015). Synthesis of Biphenyl Tyrosine Via Cross-Coupling Suzuki-Miyaura Reaction Using Aryltrifluoroborate Salts. Journal of the Brazilian Chemical Society. 4 indexed citations
8.
Caracelli, Ignez, et al.. (2010). 2-chlorovinyl tellurium dihalides, (p-tol)Te[C(H)=C(Cl)Ph]X2 for X = Cl, Br and I: variable coordination environments, supramolecular structures and docking studies in cathepsin B. Journal of the Brazilian Chemical Society. 21(11). 2155–2163. 10 indexed citations
9.
Bellomo, Ana, et al.. (2010). Expanding cyclitol structural diversity by biocatalysis and metalocatalysis. A click chemistry approach. Molecular Diversity. 15(1). 163–172. 16 indexed citations
10.
11.
Stefani, Hélio A., Fateh V. Singh, Minéia Weber, & Rafael C. Guadagnin. (2008). Ultrasound-Assisted Synthesisof Functionalized 1,3-Enynes by Palladium-Catalyzed Cross-CouplingReaction of α-Styrylbutyltelluride with AlkynyltrifluoroborateSalts. Synlett. 2008(12). 1889–1893. 3 indexed citations
12.
Zukerman‐Schpector, J., et al.. (2008). Potassium trifluoro[(Z)-3-methoxyprop-1-enyl]borate. Acta Crystallographica Section E Structure Reports Online. 64(12). m1525–m1525. 6 indexed citations
13.
Zukerman‐Schpector, J., et al.. (2008). Potassium trifluoro[(Z)-3-(oxan-2-yloxy)prop-1-en-1-yl]borate monohydrate. Acta Crystallographica Section E Structure Reports Online. 65(1). o192–o192. 1 indexed citations
14.
Stefani, Hélio A., et al.. (2004). Synthesis of 1,3-enynes via Suzuki-type reaction of vinylic tellurides and potassium alkynyltrifluoroborate salts. Tetrahedron Letters. 46(4). 563–567. 38 indexed citations
15.
Zeni, Gilson, Antônio L. Braga, & Hélio A. Stefani. (2003). Palladium‐Catalyzed Coupling of sp2‐Hybridized Tellurides. ChemInform. 35(3). 1 indexed citations
16.
Braga, Antônio L., Cláudio C. Silveira, Luciano Dornelles, Nicola Petragnani, & Hélio A. Stefani. (2001). Addition of Organotellurenyl Bromide to Terminal Acetylenes. Phosphorus, sulfur, and silicon and the related elements. 172(1). 181–188. 2 indexed citations
17.
Stefani, Hélio A., et al.. (1999). Synthesis of polyacetylenic montiporic acids A and B. Tetrahedron Letters. 40(52). 9215–9217. 37 indexed citations
18.
Comasseto, J. V., et al.. (1997). Vinylic Selenides and Tellurides - Preparation, Reactivity and Synthetic Applications. Synthesis. 1997(4). 373–403. 207 indexed citations
19.
Braga, Antônio L., et al.. (1996). Synthesis of Selenoacetals from Enol Ethers.. Journal of Chemical Research Synopses. 206–207. 5 indexed citations
20.
Stefani, Hélio A., et al.. (1989). Species containing selenium linked to sp an sp2 carbon: preparation and reactivity. Anais da Academia Brasileira de Ciências. 61(1). 37–47. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Lorenzo Testaferri Breakdown of academic impact, for papers by Sangit Kumar Breakdown of academic impact, for papers by Marcello Tiecco Breakdown of academic impact, for papers by Francesca Marini Breakdown of academic impact, for papers by Jacek Młochowski Breakdown of academic impact, for papers by Luana Bagnoli Breakdown of academic impact, for papers by Derrick L. J. Clive Breakdown of academic impact, for papers by Gilbert Kirsch Breakdown of academic impact, for papers by Harold W. Moore Breakdown of academic impact, for papers by Andrea Temperini
Rankless by CCL
2026