Gregory Hahn

706 total citations
7 papers, 537 citations indexed

About

Gregory Hahn is a scholar working on Organic Chemistry, Inorganic Chemistry and Infectious Diseases. According to data from OpenAlex, Gregory Hahn has authored 7 papers receiving a total of 537 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Organic Chemistry, 2 papers in Inorganic Chemistry and 0 papers in Infectious Diseases. Recurrent topics in Gregory Hahn's work include Catalytic Alkyne Reactions (3 papers), Synthetic Organic Chemistry Methods (3 papers) and Asymmetric Hydrogenation and Catalysis (2 papers). Gregory Hahn is often cited by papers focused on Catalytic Alkyne Reactions (3 papers), Synthetic Organic Chemistry Methods (3 papers) and Asymmetric Hydrogenation and Catalysis (2 papers). Gregory Hahn collaborates with scholars based in United States. Gregory Hahn's co-authors include Gary A. Molander, George Zweifel and Timothy M. Shoup and has published in prestigious journals such as The Journal of Organic Chemistry and Synthesis.

In The Last Decade

Gregory Hahn

7 papers receiving 512 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Gregory Hahn United States	7	465	128	56	44	40	7	537
T. HATAJIMA Japan	6	548 1.2×	126 1.0×	85 1.5×	53 1.2×	28 0.7×	7	625
James C. Towson	6	372 0.8×	112 0.9×	50 0.9×	26 0.6×	26 0.7×	6	449
J. I. CONCEPCION Spain	5	461 1.0×	120 0.9×	50 0.9×	56 1.3×	28 0.7×	5	542
Rolf Henning Germany	7	595 1.3×	115 0.9×	82 1.5×	42 1.0×	21 0.5×	12	646
Marie Jacqueline Luche France	10	364 0.8×	141 1.1×	64 1.1×	25 0.6×	31 0.8×	10	476
Katsuichi Shimoji United States	12	420 0.9×	111 0.9×	56 1.0×	25 0.6×	20 0.5×	15	516
Kevin E. Henegar United States	12	267 0.6×	137 1.1×	49 0.9×	36 0.8×	29 0.7×	20	372
John B. Yates United States	7	556 1.2×	174 1.4×	40 0.7×	34 0.8×	21 0.5×	7	595
Andreas Lindert United States	7	314 0.7×	96 0.8×	44 0.8×	27 0.6×	25 0.6×	8	413
R. J. Arhart United States	8	423 0.9×	113 0.9×	32 0.6×	77 1.8×	38 0.9×	12	514

Countries citing papers authored by Gregory Hahn

Since Specialization

Citations

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

Fields of papers citing papers by Gregory Hahn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Gregory Hahn

This figure shows the co-authorship network connecting the top 25 collaborators of Gregory Hahn. A scholar is included among the top collaborators of Gregory Hahn 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 Gregory Hahn. Gregory Hahn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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7 of 7 papers shown

1.

Zweifel, George, Gregory Hahn, & Timothy M. Shoup. (1987). 3-Borolenes. Their regio- and diastereoselective conversion into substituted homoallylic alcohols. The Journal of Organic Chemistry. 52(24). 5484–5486. 12 indexed citations

2.

Molander, Gary A., et al.. (1986). Lanthanides in organic synthesis. 5. Reduction of vinyloxiranes with samarium diiodide. An efficient route to functionalized chiral, non-racemic (E)-allylic alcohols. The Journal of Organic Chemistry. 51(26). 5259–5264. 54 indexed citations

3.

Molander, Gary A. & Gregory Hahn. (1986). Lanthanides in organic synthesis. 4. Reduction of .alpha.,.beta.-epoxy ketones with samarium diiodide. A route to chiral, nonracemic aldols. The Journal of Organic Chemistry. 51(13). 2596–2599. 141 indexed citations

4.

Molander, Gary A. & Gregory Hahn. (1986). Lanthanides in organic synthesis. 2. Reduction of .alpha.-heterosubstituted ketones. The Journal of Organic Chemistry. 51(7). 1135–1138. 246 indexed citations

5.

Zweifel, George & Gregory Hahn. (1984). Allenic zinc reagents. A remarkably regio- and diastereoselective synthesis of 2-substituted homopropargylic alcohols. The Journal of Organic Chemistry. 49(23). 4565–4567. 45 indexed citations

6.

Hahn, Gregory & George Zweifel. (1983). Syntheses of Enynes, Homopropargylic Alcohols, and Propargylic Carboxylic Acids from Allenes. Synthesis. 1983(11). 883–885. 8 indexed citations

7.

Hahn, Gregory, et al.. (1982). Preparation of functionally substituted allenes from methylacetylenes via propargylic lithium alanate or lithium borate intermediates. The Journal of Organic Chemistry. 47(17). 3364–3366. 31 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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