John Leonard

2.4k total citations
63 papers, 1.6k citations indexed

About

John Leonard is a scholar working on Organic Chemistry, Molecular Biology and Pharmacology. According to data from OpenAlex, John Leonard has authored 63 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Organic Chemistry, 15 papers in Molecular Biology and 10 papers in Pharmacology. Recurrent topics in John Leonard's work include Asymmetric Synthesis and Catalysis (25 papers), Synthetic Organic Chemistry Methods (14 papers) and Alkaloids: synthesis and pharmacology (10 papers). John Leonard is often cited by papers focused on Asymmetric Synthesis and Catalysis (25 papers), Synthetic Organic Chemistry Methods (14 papers) and Alkaloids: synthesis and pharmacology (10 papers). John Leonard collaborates with scholars based in United Kingdom, United States and Singapore. John Leonard's co-authors include Barry Lygo, Garry Procter, Stephen Caddick, Peter B. Hitchcock, Alexandra K. de K. Lewis, F. Geoffrey N. Cloke, Enrique Díez‐Barra, Sonia Merino, Richard T. Brown and James A. Wilkinson and has published in prestigious journals such as Journal of the American Chemical Society, Tetrahedron and Organic Letters.

In The Last Decade

John Leonard

62 papers receiving 1.6k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John Leonard United Kingdom 22 1.3k 349 325 143 131 63 1.6k
Kiyoharu Nishide Japan 27 1.7k 1.3× 572 1.6× 304 0.9× 175 1.2× 104 0.8× 103 2.1k
Manat Pohmakotr Thailand 28 1.8k 1.4× 567 1.6× 314 1.0× 93 0.7× 76 0.6× 125 2.5k
Masahiro Egi Japan 28 2.0k 1.6× 447 1.3× 309 1.0× 96 0.7× 131 1.0× 56 2.3k
Tadakatsu Mandai Japan 27 2.1k 1.6× 481 1.4× 339 1.0× 46 0.3× 47 0.4× 113 2.4k
Tse‐Lok Ho Canada 23 1.8k 1.4× 512 1.5× 309 1.0× 125 0.9× 54 0.4× 172 2.1k
Nobuyoshi Yasuda United States 26 1.9k 1.5× 606 1.7× 458 1.4× 55 0.4× 97 0.7× 106 2.3k
Giancarlo Fantin Italy 26 1.1k 0.9× 905 2.6× 206 0.6× 125 0.9× 148 1.1× 130 2.0k
Yoo Tanabe Japan 32 2.5k 1.9× 740 2.1× 282 0.9× 66 0.5× 82 0.6× 140 2.9k
Edward R. Biehl United States 24 1.3k 1.0× 690 2.0× 210 0.6× 53 0.4× 100 0.8× 153 1.9k
Lisa DiMichele United States 24 883 0.7× 456 1.3× 226 0.7× 47 0.3× 97 0.7× 53 1.3k

Countries citing papers authored by John Leonard

Since Specialization
Citations

This map shows the geographic impact of John Leonard'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 John Leonard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John Leonard more than expected).

Fields of papers citing papers by John Leonard

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John Leonard. 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 John Leonard. The network helps show where John Leonard may publish in the future.

Co-authorship network of co-authors of John Leonard

This figure shows the co-authorship network connecting the top 25 collaborators of John Leonard. A scholar is included among the top collaborators of John Leonard 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 John Leonard. John Leonard 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.
Aggarwal, Varinder K., et al.. (2010). A Novel Asymmetric Azaspirocyclisation Using a Morita-Baylis-Hillman-Type Reaction. Synlett. 2010(4). 579–582. 4 indexed citations
2.
Wilkinson, James A., et al.. (2007). 2′-Hydroxy-fendiline analogues as potent relaxers of isolated arteries. European Journal of Pharmacology. 561(1-3). 160–163. 5 indexed citations
3.
Wilkinson, James A., et al.. (2006). Novel methods for the synthesis of 5-substituted-3-carboxy-2,5- and 4,5-dihydrothiophenes and 5-substituted 2- and 3-sulfolenes. Tetrahedron. 63(5). 1065–1073. 5 indexed citations
4.
Wilkinson, James A., et al.. (2005). Asymmetric alkylation of diarylmethane derivatives. Tetrahedron. 62(8). 1833–1844. 50 indexed citations
5.
Leonard, John, et al.. (2000). A Practical Large-Scale Synthesis of 3-Carbomethoxy-3-sulfolene. Synthesis. 2000(4). 507–509.
6.
Leonard, John, et al.. (1999). Interesting stereoselectivity of intramolecular Diels-Alder reactions leading to 5-carbomethoxy yohimbine systems. Tetrahedron Letters. 40(46). 8141–8145. 2 indexed citations
7.
Leonard, John, et al.. (1997). A One-Pot Tandem Pictet-Spengler-Diels-Alder Synthesis of Apoyohimbines from 3-Carbomethoxy-2-(formylmethyl)-3-sulfolene. Tetrahedron Letters. 38(17). 3071–3074. 18 indexed citations
8.
Leonard, John, et al.. (1997). The Geometry of Dienes from 2,3-Substituted-3-Sulfolenes and the Stereoselectivity of their Intramolecular Diels-Alder Cyclisations. Tetrahedron Letters. 38(17). 3067–3070. 3 indexed citations
9.
Leonard, John. (1995). Tactics of Organic Synthesis. Synthesis. 1995(8). 1051–1052. 49 indexed citations
10.
11.
Leonard, John. (1994). Control of asymmetry through conjugate addition reactions. 1(5). 387–387. 52 indexed citations
12.
Leonard, John, et al.. (1990). Butene-1 is made from ethylene. Hydrocarbon Process. 69(3). 73–75. 1 indexed citations
13.
Leonard, John, et al.. (1990). Useful chiral lactones derived from cis-bicyclo[3.3.0]octan-3,7-dione via asymmetric deprotonation. Tetrahedron Asymmetry. 1(10). 699–702. 13 indexed citations
14.
Leonard, John, et al.. (1990). A short enantioselective route to corynanthe alkaloid precursors. Tetrahedron Letters. 31(5). 739–742. 22 indexed citations
15.
Leonard, John, et al.. (1989). Efficient Procedures forin situTrapping of (R)- and (S)-Glyceraldehyde acetonides by Stabilized Wittig Reagents. Synthetic Communications. 19(20). 3529–3534. 15 indexed citations
16.
Hussain, Nigel & John Leonard. (1987). Total synthesis of specionin - natural product or artifact ?. Tetrahedron Letters. 28(41). 4871–4874. 10 indexed citations
17.
Commereuc, D., et al.. (1984). Dimerize ethylene to butene-1. Hydrocarbon Process. 63(11). 118–120. 9 indexed citations
18.
Leonard, John, et al.. (1983). High-performance liquid chromatographic method for determination of sulfapyridine in human saliva using post-column, in-line derivatization with fluorescamine. Journal of Chromatography B Biomedical Sciences and Applications. 273(2). 464–468. 15 indexed citations
19.
Chauvin, Yves, et al.. (1982). Another use for dimersol. [Vapidrol Process, IFP Cyclohexane Process, Dimersol G, Dimersol X, Dimersol E]. Hydrocarbon Process. 1 indexed citations
20.
Brown, Richard T. & John Leonard. (1978). Stereoconservative transformation of secologanin into meroquinene and its derivatives. Journal of the Chemical Society Chemical Communications. 725–725. 6 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.

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