H. Schäfer

1.4k total citations
50 papers, 1.0k citations indexed

About

H. Schäfer is a scholar working on Organic Chemistry, Geochemistry and Petrology and Fuel Technology. According to data from OpenAlex, H. Schäfer has authored 50 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Organic Chemistry, 8 papers in Geochemistry and Petrology and 8 papers in Fuel Technology. Recurrent topics in H. Schäfer's work include Synthesis and Characterization of Heterocyclic Compounds (13 papers), Synthesis of heterocyclic compounds (11 papers) and Organic Chemistry Cycloaddition Reactions (8 papers). H. Schäfer is often cited by papers focused on Synthesis and Characterization of Heterocyclic Compounds (13 papers), Synthesis of heterocyclic compounds (11 papers) and Organic Chemistry Cycloaddition Reactions (8 papers). H. Schäfer collaborates with scholars based in Germany and Australia. H. Schäfer's co-authors include K. Gewald, Ralph J. Tyler, R. A. Durie, U. Schlegel, Mary J. Wornat, Horst Hartmann, K. Sattler, Marietta Seifert, K. W. Riley and Gerhard Kempter and has published in prestigious journals such as Analytical Chemistry, Fuel and The Analyst.

In The Last Decade

H. Schäfer

50 papers receiving 953 citations

Peers

H. Schäfer
Ronald Liotta United States
John R. Kershaw Australia
R. Markuszewski United States
Paul Burchill United Kingdom
Masaharu Nishioka United States
Anthony H. Clemens New Zealand
Ikuo Saito Japan
Glen Brons United States
Douglas M. Jewell Switzerland
K.S. Vorres United States
Ronald Liotta United States
H. Schäfer
Citations per year, relative to H. Schäfer H. Schäfer (= 1×) peers Ronald Liotta

Countries citing papers authored by H. Schäfer

Since Specialization
Citations

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

Fields of papers citing papers by H. Schäfer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H. Schäfer

This figure shows the co-authorship network connecting the top 25 collaborators of H. Schäfer. A scholar is included among the top collaborators of H. Schäfer 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 H. Schäfer. H. Schäfer 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.
Riley, K. W., et al.. (1990). Rapid acid extraction of bituminous coal for the determination of phosphorus. The Analyst. 115(11). 1405–1405. 3 indexed citations
2.
Schäfer, H. & K. Gewald. (1987). Einstufige Synthese von Pyrazino[1,2‐a:4,5‐a′]diindol‐6,13‐dionen. Journal für praktische Chemie. 329(4). 745–748. 1 indexed citations
3.
Schäfer, H. & K. Gewald. (1983). 2‐Amino‐5‐nitrothiophen‐3‐carbonsäureester aus 1,1‐Dimethyl‐amino‐2‐nitroethylen, Cyanessigsäureester und Schwefel. Zeitschrift für Chemie. 23(5). 179–179. 1 indexed citations
4.
Gewald, K., et al.. (1982). Reaktion von methylenaktiven Nitrilen und Cyanamid mit acylierten Enaminen. Journal für praktische Chemie. 324(6). 933–941. 13 indexed citations
5.
Schäfer, H. & K. Gewald. (1981). Substituted 4‐Nitropyrazoles from Nitroketenaminals. Journal für praktische Chemie. 323(2). 332–336. 6 indexed citations
6.
Tyler, Ralph J. & H. Schäfer. (1980). Flash pyrolysis of coals: influence of cations on the devolatilization behaviour of brown coals. Fuel. 59(7). 487–494. 104 indexed citations
7.
Schäfer, H. & K. Gewald. (1980). Darstellung und Reaktionen von 2‐Arylazo‐2‐nitro‐keten‐aminalen. Journal für praktische Chemie. 322(1). 87–93. 10 indexed citations
8.
9.
Schäfer, H., K. Sattler, & K. Gewald. (1979). Contribution to the Synthesis of 4‐Aminoquinolines and ‐quinolinones‐(2) from Anthranilonitrile. Journal für praktische Chemie. 321(4). 695–698. 11 indexed citations
10.
Schäfer, H. & K. Gewald. (1978). 3‐Nitro‐6‐aminopyridon‐2‐imine und 4‐Nitro‐1‐aminnopyrido[1,2‐a]benzimidazole aus Nitroketenaminalen. Zeitschrift für Chemie. 18(9). 335–336. 14 indexed citations
11.
Schäfer, H.. (1977). Organically bound iron in brown coals. Fuel. 56(1). 45–46. 16 indexed citations
12.
Schäfer, H., K. Gewald, & Marietta Seifert. (1976). Darstellung und Reaktionen von 2‐Arylamino‐3‐nitrochinolinen. Journal für praktische Chemie. 318(1). 39–50. 11 indexed citations
13.
Schäfer, H. & K. Gewald. (1975). Notiz zur Reaktion von Kohlenoxidsulfid mit methylenaktiven Nitrilen. Journal für praktische Chemie. 317(2). 337–339. 4 indexed citations
14.
Schäfer, H. & K. Gewald. (1974). Zur Chemie des 4‐Phenyl‐thiazoly‐(2)‐acetonitrils. Journal für praktische Chemie. 316(4). 684–692. 39 indexed citations
15.
Schäfer, H.. (1972). Factors affecting the equilibrium moisture contents of low-rank coals. Fuel. 51(1). 4–9. 60 indexed citations
16.
Schäfer, H.. (1970). Carboxyl groups and ion exchange in low-rank coals. Fuel. 49(2). 197–213. 148 indexed citations
17.
Kempter, Gerhard, et al.. (1969). Thiazolyl‐ und Pyrrolylchinoline. Zeitschrift für Chemie. 9(5). 186–187. 3 indexed citations
18.
19.
20.
Schäfer, H.. (1963). Application of Ion Exchange to Analysis of Phosphate Rocks.. Analytical Chemistry. 35(1). 53–56. 13 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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