Ralf Weirich

949 total citations · 1 hit paper
6 papers, 855 citations indexed

About

Ralf Weirich is a scholar working on Organic Chemistry, Spectroscopy and Pharmacology. According to data from OpenAlex, Ralf Weirich has authored 6 papers receiving a total of 855 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Organic Chemistry, 3 papers in Spectroscopy and 2 papers in Pharmacology. Recurrent topics in Ralf Weirich's work include Axial and Atropisomeric Chirality Synthesis (5 papers), Chemical synthesis and alkaloids (3 papers) and Molecular spectroscopy and chirality (3 papers). Ralf Weirich is often cited by papers focused on Axial and Atropisomeric Chirality Synthesis (5 papers), Chemical synthesis and alkaloids (3 papers) and Molecular spectroscopy and chirality (3 papers). Ralf Weirich collaborates with scholars based in Germany, Belgium and Ivory Coast. Ralf Weirich's co-authors include Gerhard Bringmann, Rainer Walter, Martin Rübenacker, Johannes R. Jansen, Laurent Aké Assi, Jörg Holenz, Christian Funke, Michael R. Boyd, Robert J. Gulakowski and Guido François and has published in prestigious journals such as Tetrahedron, Phytochemistry and Planta Medica.

In The Last Decade

Ralf Weirich

6 papers receiving 819 citations

Hit Papers

align trajectories

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.

The Directed Synthesis of Biaryl Compounds: Modern Concepts and Strategies

1990 544 citations Gerhard Bringmann, Rainer Walter et al. Angewandte Chemie International Edition in English profile →

Peers

Ralf Weirich

OC

SPECT

MB

PHARM

IC

Olaf Schupp Germany

Orfeo O. Orazi Argentina

Francisco Yuste Mexico

Robert Lett France

Yasuyuki Kita Japan

Henri Philippe Husson

Nobuyuki Takiyama Japan

Yasukazu Ogino United States

James Kallmerten United States

Lloyd J. Dolby United States

Olaf Schupp Germany

Ralf Weirich

434 ×0.5

OC

172 ×0.9

SPECT

92 ×1.1

MB

36 ×0.5

PHARM

41 ×0.6

IC

Citations per year, relative to Ralf Weirich Ralf Weirich (= 1×) peers Olaf Schupp

Countries citing papers authored by Ralf Weirich

Since Specialization

Citations

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

Fields of papers citing papers by Ralf Weirich

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ralf Weirich

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

All Works

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6 of 6 papers shown

1.

Bringmann, Gerhard, Jörg Holenz, Ralf Weirich, et al.. (1998). First synthesis of the antimalarial naphthylisoquinoline alkaloid dioncophylline C, and its unnatural anti-HIV dimer, jozimine C. Tetrahedron. 54(3-4). 497–512. 63 indexed citations

2.

Bringmann, Gerhard, et al.. (1993). Acetogenic Isoquinoline Alkaloids, L. The Synthesis of All Possible Isomeric 6,8‐Dioxygenated 1,3‐Dimethyl‐1,2,3,4‐tetrahydroisoquinoline Methyl Ethers – Useful Chiral Building Blocks for Naphthylisoquinoline Alkaloids. Liebigs Annalen der Chemie. 1993(8). 877–888. 69 indexed citations

3.

Bringmann, Gerhard, et al.. (1992). Ancistrobrevine D: An Unusual Alkaloid fromAncistrocladus abbreviatus. Planta Medica. 58(S 1). 703–704. 12 indexed citations

4.

Bringmann, Gerhard, Martin Rübenacker, Ralf Weirich, & Laurent Aké Assi. (1992). Dioncophylline C from the roots of Triphyophyllum peltatum, the first 5,1′-coupled dioncophyllaceae alkaloid. Phytochemistry. 31(11). 4019–4024. 43 indexed citations

5.

Bringmann, Gerhard, Rainer Walter, & Ralf Weirich. (1990). The Directed Synthesis of Biaryl Compounds: Modern Concepts and Strategies. Angewandte Chemie International Edition in English. 29(9). 977–991. 544 indexed citations breakdown →

6.

Bringmann, Gerhard, Rainer Walter, & Ralf Weirich. (1990). Der gezielte Aufbau von Biarylverbindungen: Moderne Konzepte und Strategien. Angewandte Chemie. 102(9). 1006–1019. 124 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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