Ernst Schaumann

3.9k total citations
212 papers, 2.5k citations indexed

About

Ernst Schaumann is a scholar working on Organic Chemistry, Molecular Biology and Spectroscopy. According to data from OpenAlex, Ernst Schaumann has authored 212 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 202 papers in Organic Chemistry, 26 papers in Molecular Biology and 16 papers in Spectroscopy. Recurrent topics in Ernst Schaumann's work include Organic Chemistry Cycloaddition Reactions (70 papers), Synthesis and Catalytic Reactions (58 papers) and Synthesis of heterocyclic compounds (42 papers). Ernst Schaumann is often cited by papers focused on Organic Chemistry Cycloaddition Reactions (70 papers), Synthesis and Catalytic Reactions (58 papers) and Synthesis of heterocyclic compounds (42 papers). Ernst Schaumann collaborates with scholars based in Germany, United States and Switzerland. Ernst Schaumann's co-authors include Wolfgang Walter, Ḡunadi Adiwidjaja, Andreas Kirschning, Roger Ketcham, Susanne Grabley, Frank Narjes, Gerd Rühter, W. Walter, Ulrich Behrens and Hans Paulsen and has published in prestigious journals such as Angewandte Chemie International Edition, Chemical Communications and The Journal of Physical Chemistry.

In The Last Decade

Ernst Schaumann

209 papers receiving 2.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ernst Schaumann Germany 25 2.3k 327 195 183 113 212 2.5k
Arthur G. Schultz United States 28 2.4k 1.1× 549 1.7× 126 0.6× 239 1.3× 158 1.4× 178 2.8k
Bruce Rickborn United States 27 1.8k 0.8× 354 1.1× 257 1.3× 302 1.7× 149 1.3× 86 2.1k
Yannick Vallée France 24 1.5k 0.6× 432 1.3× 150 0.8× 169 0.9× 102 0.9× 97 1.7k
Jack K. Crandall United States 27 1.5k 0.6× 232 0.7× 160 0.8× 179 1.0× 99 0.9× 72 1.7k
William W. Paudler United States 23 1.5k 0.6× 435 1.3× 135 0.7× 96 0.5× 73 0.6× 125 1.8k
H. D. Verkruijsse Netherlands 19 1.4k 0.6× 143 0.4× 95 0.5× 300 1.6× 119 1.1× 86 1.6k
Alfred Gieren Germany 18 1.1k 0.5× 287 0.9× 107 0.5× 419 2.3× 170 1.5× 157 1.4k
Werner Tochtermann Germany 20 1.5k 0.7× 322 1.0× 301 1.5× 236 1.3× 112 1.0× 165 1.7k
Imanol Tellitu Spain 30 2.3k 1.0× 270 0.8× 136 0.7× 152 0.8× 64 0.6× 74 2.5k
William E. Parham United States 26 1.8k 0.8× 289 0.9× 185 0.9× 189 1.0× 177 1.6× 123 2.1k

Countries citing papers authored by Ernst Schaumann

Since Specialization
Citations

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

Fields of papers citing papers by Ernst Schaumann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ernst Schaumann

This figure shows the co-authorship network connecting the top 25 collaborators of Ernst Schaumann. A scholar is included among the top collaborators of Ernst Schaumann 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 Ernst Schaumann. Ernst Schaumann 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.
Schaumann, Ernst, et al.. (2010). New Syntheses and Ring Expansion Reactions of Cyclobutenimines. Australian Journal of Chemistry. 63(12). 1656–1664. 2 indexed citations
2.
Schaumann, Ernst & Roger Ketcham. (2006). [2+2]-Cycloreversionen. Angewandte Chemie. 94(4). 231–253. 5 indexed citations
3.
Schaumann, Ernst, et al.. (1999). Ring-opening of N-tosylaziridines by heterosubstituted allyl anions. Application to the synthesis of azetidines and pyrrolidines. Journal of the Chemical Society Perkin Transactions 1. 1927–1932. 10 indexed citations
4.
Schaumann, Ernst, et al.. (1998). Lewis acid supported reactions of 1,3-bis(silyl)allyl compounds with epoxides — inter- and intramolecular versions. Tetrahedron Letters. 39(7). 529–532. 5 indexed citations
5.
Tornus, Ingo, Ernst Schaumann, Roland Mayer, & Ḡunadi Adiwidjaja. (1995). Reactions of N‐sulfonylalkylamines with ynamines — formation of 2H‐1,2‐thiazete 1,1‐dioxides, novel thioketene S,S‐dioxide dimers, and other s,n‐heterocycles. Liebigs Annalen. 1995(10). 1795–1800. 5 indexed citations
6.
Kirschning, Andreas, et al.. (1994). Cyclopentanole durch eine Silicium‐induzierte Reaktionskaskade. Angewandte Chemie. 106(2). 220–221. 15 indexed citations
7.
Weber, Klaus, et al.. (1991). Tandem Silyl Migrations Leading to α,β‐Bis‐silylated Enals and Enones. Angewandte Chemie International Edition in English. 30(12). 1687–1688. 10 indexed citations
8.
Schaumann, Ernst, et al.. (1990). Synthesis of α,β-Unsaturated Thiocarboxylic AcidS-Esters via Horner Emmons Olefination. Synthesis. 1990(1). 47–51. 5 indexed citations
9.
Schaumann, Ernst, et al.. (1988). Über das Reaktionsverhalten von 4‐Thioxo‐2‐azetidinonen. Chemische Berichte. 121(4). 701–707. 2 indexed citations
10.
Schaumann, Ernst, et al.. (1986). 1,3-Anionic Cycloaddition of 1,3-Diphenyl-2-azaallyl Lithium to Thioketenes and Thioketene S-Oxides. Heterocycles. 24(5). 1237–1237. 4 indexed citations
11.
12.
Schaumann, Ernst & Gerd Rühter. (1985). Fragmentation of 1,3-dithiolane-derived sulfur ylides. A convenient thioaldehyde synthesis. Tetrahedron Letters. 26(43). 5265–5268. 20 indexed citations
13.
Rao, V. Jayathirtha, V. Ramamurthy, Ernst Schaumann, & Hildegard Nimmesgern. (1984). Oxidation of thioketenes by singlet oxygen. The Journal of Organic Chemistry. 49(4). 615–621. 10 indexed citations
14.
Schaumann, Ernst & Roger Ketcham. (1982). [2 + 2]‐Cycloreversions. Angewandte Chemie International Edition in English. 21(4). 225–247. 57 indexed citations
15.
Ketcham, Roger, et al.. (1980). Heterocyclic Ring-Closure Reactions; VII1. A Facile Synthesis of 5-Imino-4-oxazolidinethiones and 4-Thioxo-5-oxazolidinones. Synthesis. 1980(11). 869–870. 20 indexed citations
16.
Schaumann, Ernst, et al.. (1979). Thioketen‐Synthesen, V1) Allyl‐substituierte Thioketene durch Thio‐Claisen‐Umlagerung2). Liebigs Annalen der Chemie. 1979(11). 1746–1755. 20 indexed citations
17.
Schaumann, Ernst, et al.. (1979). Zur Chemie der α‐Thiocarbamoylcarbodiimide. Liebigs Annalen der Chemie. 1979(9). 1322–1336. 9 indexed citations
18.
Schaumann, Ernst, et al.. (1978). Unusual incorporation of the cyano group of t-butylcyanoketen into a cycloadduct. X-Ray structure of the pyrimido[1,6-e][1,3,5]dioxazine formed. Journal of the Chemical Society Chemical Communications. 820–820. 1 indexed citations
19.
Schaumann, Ernst, et al.. (1974). Cycloaddition reactions of sulfonylisothiocyanates with β,β-disubstituted enamines. Tetrahedron. 30(23-24). 4147–4152. 15 indexed citations
20.
Walter, Wolfgang & Ernst Schaumann. (1971). The Chemistry of Thiohydroxamic Acids. Synthesis. 1971(3). 111–130. 42 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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