Günter Helmchen

15.2k total citations · 4 hit papers
198 papers, 12.5k citations indexed

About

Günter Helmchen is a scholar working on Organic Chemistry, Inorganic Chemistry and Molecular Biology. According to data from OpenAlex, Günter Helmchen has authored 198 papers receiving a total of 12.5k indexed citations (citations by other indexed papers that have themselves been cited), including 174 papers in Organic Chemistry, 73 papers in Inorganic Chemistry and 45 papers in Molecular Biology. Recurrent topics in Günter Helmchen's work include Asymmetric Synthesis and Catalysis (101 papers), Asymmetric Hydrogenation and Catalysis (69 papers) and Synthetic Organic Chemistry Methods (58 papers). Günter Helmchen is often cited by papers focused on Asymmetric Synthesis and Catalysis (101 papers), Asymmetric Hydrogenation and Catalysis (69 papers) and Synthetic Organic Chemistry Methods (58 papers). Günter Helmchen collaborates with scholars based in Germany, Switzerland and United Kingdom. Günter Helmchen's co-authors include Andreas Pfaltz, Jian‐Ping Qu, Henning Steinhagen, Robert Weihofen, Mathias Schelwies, Pierre Dübon, Björn Bartels, Frank Röminger, Shu‐Li You and Axel Dahnz and has published in prestigious journals such as Chemical Reviews, Journal of the American Chemical Society and Angewandte Chemie International Edition.

In The Last Decade

Günter Helmchen

197 papers receiving 12.1k citations

Hit Papers

PhosphinooxazolinesA New Class of Versatile, Modula... 1982 2026 1996 2011 2000 2018 1993 1982 250 500 750 1000
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. PhosphinooxazolinesA New Class of Versatile, Modular P,N-Ligands for Asymmetric Catalysis
    2000 1.2k citations Günter Helmchen et al. profile →
  2. Iridium-Catalyzed Asymmetric Allylic Substitution Reactions
    2018 662 citations Qiang Cheng, Hang‐Fei Tu et al. Chemical Reviews profile →
  3. Phosphinoaryl- and phosphinoalkyloxazolines as new chiral ligands for enantioselective catalysis: Very high enantioselectivity in palladium catalyzed allylic substitutions
    1993 499 citations Günter Helmchen et al. Tetrahedron Letters profile →
  4. Basic Principles of the CIP‐System and Proposals for a Revision
    1982 477 citations Günter Helmchen et al. Angewandte Chemie International Edition in English profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Günter Helmchen Germany 58 11.1k 5.6k 2.6k 1.1k 514 198 12.5k
Edwin Vedējs United States 58 10.4k 0.9× 2.6k 0.5× 2.8k 1.1× 746 0.7× 274 0.5× 247 11.9k
Satoru Masamune United States 60 10.0k 0.9× 3.2k 0.6× 3.1k 1.2× 1.1k 1.0× 573 1.1× 232 13.0k
Hidemasa Takaya Japan 52 9.1k 0.8× 6.4k 1.1× 2.0k 0.8× 1.2k 1.1× 1.8k 3.4× 157 11.4k
Tsuneo Imamoto Japan 56 8.6k 0.8× 6.1k 1.1× 2.6k 1.0× 435 0.4× 1.4k 2.8× 244 10.5k
Yoshiji Takemoto Japan 57 13.9k 1.3× 3.3k 0.6× 3.5k 1.4× 632 0.6× 201 0.4× 339 14.9k
Hiroaki Sasai Japan 58 10.7k 1.0× 4.2k 0.7× 2.1k 0.8× 1.1k 1.0× 487 0.9× 245 11.8k
Henk Hiemstra Netherlands 50 10.3k 0.9× 1.6k 0.3× 3.8k 1.5× 711 0.6× 320 0.6× 267 11.5k
Ei‐ichi Negishi United States 71 18.0k 1.6× 3.6k 0.6× 2.1k 0.8× 364 0.3× 230 0.4× 335 19.2k
Marisa C. Kozlowski United States 53 9.6k 0.9× 2.2k 0.4× 1.5k 0.6× 1.1k 1.0× 414 0.8× 225 11.1k
Masato Kitamura Japan 48 7.7k 0.7× 4.9k 0.9× 2.7k 1.0× 1.3k 1.1× 1.5k 2.9× 151 9.8k

Countries citing papers authored by Günter Helmchen

Since Specialization
Citations

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

Fields of papers citing papers by Günter Helmchen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Günter Helmchen

This figure shows the co-authorship network connecting the top 25 collaborators of Günter Helmchen. A scholar is included among the top collaborators of Günter Helmchen 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 Günter Helmchen. Günter Helmchen 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.
Cheng, Qiang, Hang‐Fei Tu, Chao Zheng, et al.. (2018). Iridium-Catalyzed Asymmetric Allylic Substitution Reactions. Chemical Reviews. 119(3). 1855–1969. 662 indexed citations breakdown →
2.
3.
Schelwies, Mathias, Ralph Moser, Adrian L. Dempwolff, Frank Röminger, & Günter Helmchen. (2009). Gold‐Catalyzed Intermolecular Addition of Carbonyl Compounds to 1,6‐Enynes: Reactivity, Scope, and Mechanistic Aspects. Chemistry - A European Journal. 15(41). 10888–10900. 40 indexed citations
4.
Spiess, Stephanie, et al.. (2008). Iridium‐Catalyzed Asymmetric Allylic Substitutions—Very High Regioselectivity and Air Stability with a Catalyst Derived from Dibenzo[a,e]cyclooctatetraene and a Phosphoramidite. Angewandte Chemie International Edition. 47(40). 7652–7655. 108 indexed citations
5.
Schelwies, Mathias, Adrian L. Dempwolff, Frank Röminger, & Günter Helmchen. (2007). Gold‐Catalyzed Intermolecular Addition of Carbonyl Compounds to 1,6‐Enynes. Angewandte Chemie International Edition. 46(29). 5598–5601. 88 indexed citations
6.
Helmchen, Günter, Axel Dahnz, Pierre Dübon, Mathias Schelwies, & Robert Weihofen. (2006). Iridium-catalysed asymmetricallylic substitutions. Chemical Communications. 675–691. 453 indexed citations
7.
Streiff, Stéphane, Carolin Welter, Mathias Schelwies, et al.. (2005). Carbocycles via enantioselective inter- and intramolecular iridium-catalysed allylic alkylations. Chemical Communications. 2957–2957. 55 indexed citations
8.
Helmchen, Günter, Jean‐Michel Becht, & Oliver Meyer. (2003). Enantioselective Syntheses of (-)-(R)-Rolipram, (-)-(R)-Baclofen and Other GABA Analogues via Rhodium-Catalyzed Conjugate Addition of Arylboronic Acids. Synthesis. 2805–2810. 7 indexed citations
9.
Langer, Thomas, et al.. (2000). Diastereoselective Oxidative Coupling of Enolates of 3-Phenylpropionic Acid Derivatives - EPC Synthesis of ent-Hinokinin. Synlett. 1996(11). 1137–1139. 14 indexed citations
10.
Helmchen, Günter, et al.. (1994). Highly effective catalysts for the conjugate addition of silyl ketene acetals to enones (Mukaiyama-Michael reaction). Tetrahedron Letters. 35(2). 233–236. 17 indexed citations
11.
Howarth, Joshua, et al.. (1993). Lewis acids based on sulfur containing boron heterocycles and trialkylthioboranes. Tetrahedron Letters. 34(25). 4095–4096. 5 indexed citations
12.
13.
Helmchen, Günter, et al.. (1989). Behavioral activity of optical isomers of 5,9-dimethylheptadecane, the sex pheromone ofLeucoptera scitella L. (Lepidoptera: Lyonetidae). Journal of Chemical Ecology. 15(5). 1535–1543. 20 indexed citations
14.
Suslick, Kenneth S., Kurt Schaffner, Martin Demuth, et al.. (1986). Modern Synthetic Methods 1986. 159 indexed citations
15.
16.
Poll, Thomas S. van der, et al.. (1985). Concerning the Mechanism of the Asymmetric Diels‐Alder Reaction: First Crystal Structure Analysis of a Lewis Acid Complex of a Chiral Dienophile. Angewandte Chemie International Edition in English. 24(2). 112–114. 84 indexed citations
17.
Helmchen, Günter, et al.. (1984). Hochenantioselektive Homoaldol‐Addition mit chiralen N‐Allylharnstoffen ‐ Anwendung zur Synthese optisch reiner γ‐Lactone. Angewandte Chemie. 96(11). 895–896. 46 indexed citations
18.
19.
Helmchen, Günter, Georges Haas, & V. Prelog. (1973). Über die stereoisomeren α‐Phenyläthylamide der Biphenyl‐2,2′,6,6′‐tetracarbonsäure, Molekeln der Punktsymmetrie D2, S4, C2 und C1. Helvetica Chimica Acta. 56(7). 2255–2270. 12 indexed citations
20.
Prelog, V. & Günter Helmchen. (1972). Pseudoasymmetrie in der organischen Chemie. Helvetica Chimica Acta. 55(7). 2581–2598. 88 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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