Ryohei Yamaguchi

9.6k total citations · 1 hit paper
168 papers, 7.8k citations indexed

About

Ryohei Yamaguchi is a scholar working on Organic Chemistry, Inorganic Chemistry and Molecular Biology. According to data from OpenAlex, Ryohei Yamaguchi has authored 168 papers receiving a total of 7.8k indexed citations (citations by other indexed papers that have themselves been cited), including 105 papers in Organic Chemistry, 59 papers in Inorganic Chemistry and 22 papers in Molecular Biology. Recurrent topics in Ryohei Yamaguchi's work include Asymmetric Hydrogenation and Catalysis (52 papers), Catalytic C–H Functionalization Methods (21 papers) and Asymmetric Synthesis and Catalysis (20 papers). Ryohei Yamaguchi is often cited by papers focused on Asymmetric Hydrogenation and Catalysis (52 papers), Catalytic C–H Functionalization Methods (21 papers) and Asymmetric Synthesis and Catalysis (20 papers). Ryohei Yamaguchi collaborates with scholars based in Japan, United States and South Korea. Ryohei Yamaguchi's co-authors include Ken‐ichi Fujita, Ryoko Kawahara, Fumihiro Hanasaka, Mituyosi Kawanisi, Kazunari Yamamoto, Yoshinori Takahashi, Chiho Asai, Takeshi Fujii, Zhenzi Li and Masato Kobayashi and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Journal of the American Chemical Society.

In The Last Decade

Ryohei Yamaguchi

158 papers receiving 7.7k citations

Hit Papers

align trajectories sort by overperformance

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.

Ubiquity of human-induced changes in climate variability

2021 271 citations Keith B. Rodgers, Sun‐Seon Lee et al. Earth System Dynamics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryohei Yamaguchi Japan	45	4.9k	4.5k	1.7k	1.4k	831	168	7.8k
Tamotsu Takahashi Japan	49	7.3k 1.5×	2.2k 0.5×	215 0.1×	613 0.4×	128 0.2×	220	8.9k
Shaowu Wang China	40	3.8k 0.8×	1.7k 0.4×	573 0.3×	362 0.3×	157 0.2×	206	6.6k
Ralf Steudel Germany	38	2.8k 0.6×	1.3k 0.3×	250 0.1×	307 0.2×	498 0.6×	310	6.4k
Emilio Tagliavini Italy	36	1.6k 0.3×	716 0.2×	151 0.1×	561 0.4×	539 0.6×	112	4.7k
J. Mink Hungary	36	1.4k 0.3×	1.2k 0.3×	254 0.1×	181 0.1×	388 0.5×	188	4.5k
Brian F. Yates Australia	39	4.1k 0.8×	1.4k 0.3×	480 0.3×	265 0.2×	167 0.2×	218	6.2k
David E. Richardson United States	36	1.5k 0.3×	891 0.2×	107 0.1×	601 0.4×	201 0.2×	138	5.2k
William P. Griffith United Kingdom	48	4.2k 0.9×	2.9k 0.7×	121 0.1×	804 0.6×	376 0.5×	246	9.0k
Robert J. Nielsen United States	32	1.8k 0.4×	1.2k 0.3×	203 0.1×	220 0.2×	135 0.2×	69	4.3k
Scott R. Wilson United States	42	1.5k 0.3×	1.8k 0.4×	124 0.1×	407 0.3×	417 0.5×	124	5.5k

Countries citing papers authored by Ryohei Yamaguchi

Since Specialization

Citations

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

Fields of papers citing papers by Ryohei Yamaguchi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryohei Yamaguchi

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

All Works

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20 of 20 papers shown

Rodgers, Keith B., Olivier Aumont, Katsuya Toyama, et al.. (2024). Low-latitude mesopelagic nutrient recycling controls productivity and export. Nature. 632(8026). 802–807. 5 indexed citations

Yasunaka, Sayaka, Manfredi Manizza, Jens Terhaar, et al.. (2023). An Assessment of CO₂ Uptake in the Arctic Ocean From 1985 to 2018. Global Biogeochemical Cycles. 37(11). 14 indexed citations

Kim, Ji‐Eun, Ryohei Yamaguchi, Keith B. Rodgers, et al.. (2023). Interannual fires as a source for subarctic summer decadal climate variability mediated by permafrost thawing. npj Climate and Atmospheric Science. 6(1). 4 indexed citations

Zscheischler, Jakob, et al.. (2022). Hotspots and drivers of compound marine heatwaves and low net primary production extremes. Biogeosciences. 19(24). 5807–5835. 28 indexed citations

Wieder, William R., Daniel P. Kennedy, Flavio Lehner, et al.. (2022). Pervasive alterations to snow-dominated ecosystem functions under climate change. Proceedings of the National Academy of Sciences. 119(30). e2202393119–e2202393119. 35 indexed citations

Borah, Angana, et al.. (2022). Comparison of thermoelectric properties of sorted and unsorted semiconducting single-walled carbon nanotube free-standing sheets. Japanese Journal of Applied Physics. 61(12). 121004–121004. 3 indexed citations

Rodgers, Keith B., Sun‐Seon Lee, Nan Rosenbloom, et al.. (2021). Ubiquity of human-induced changes in climate variability. Earth System Dynamics. 12(4). 1393–1411. 271 indexed citations breakdown →

Rodgers, Keith B., Sun‐Seon Lee, Nan Rosenbloom, et al.. (2021). Ubiquity of human-induced changes in climate variability. 56 indexed citations

Li, Lei, Ryohei Yamaguchi, & Akio Wakejima. (2020). Polarization engineering via InAlN/AlGaN heterostructures for demonstration of normally-off AlGaN channel field effect transistors. Applied Physics Letters. 117(15). 6 indexed citations

10.

Chu, Jung‐Eun, Sun‐Seon Lee, Axel Timmermann, et al.. (2020). Reduced tropical cyclone densities and ocean effects due to anthropogenic greenhouse warming. Science Advances. 6(51). 56 indexed citations

11.

Kumanek, Bogumiła, Angana Borah, Ryohei Yamaguchi, et al.. (2020). Thermoelectric Properties of Thin Films from Sorted Single-Walled Carbon Nanotubes. Materials. 13(17). 3808–3808. 10 indexed citations

12.

Yamaguchi, Ryohei, et al.. (2017). Synthesis of a series of iridium complexes bearing substituted 2-pyridonates and their catalytic performance for acceptorless dehydrogenation of alcohols under neutral conditions. Journal of Organometallic Chemistry. 843. 14–19. 16 indexed citations

13.

Fujita, Ken‐ichi, et al.. (2009). Cobalt‐Catalyzed C–N Bond‐Forming Reaction between N‐Aromatic 2‐Chlorides and Secondary Amines. European Journal of Organic Chemistry. 2009(27). 4586–4588. 48 indexed citations

14.

Hanasaka, Fumihiro, Ken‐ichi Fujita, & Ryohei Yamaguchi. (2004). Cp*Ir Complexes Bearing N-Heterocyclic Carbene Ligands as Effective Catalysts for Oppenauer-Type Oxidation of Alcohols. Organometallics. 23(7). 1490–1492. 108 indexed citations

15.

Fujita, Ken‐ichi, et al.. (2002). Synthesis of a DMPM and Hydrido-Bridged Diiridium Complex, [(Cp*Ir)₂(μ-dmpm)(μ-H)₂][OTf]₂, and Its Reactivity toward Alkynes and Isocyanides. Organometallics. 21(18). 3749–3757. 37 indexed citations

16.

Fujita, Ken‐ichi, et al.. (2002). Chemoselective transfer hydrodechlorination of aryl chlorides catalyzed by Cp*Rh complexes. Chemical Communications. 2964–2965. 57 indexed citations

17.

Fujita, Ken‐ichi, Masashi Nakamura, & Ryohei Yamaguchi. (2000). Alkoxylation and Amination of Ring-Methyl Group in Pentamethylcyclopentadienyliridium Complexes. Organometallics. 20(1). 100–105. 12 indexed citations

18.

Yamaguchi, Ryohei, et al.. (1991). Preparation of a 3-Hydroxymethyl-2,4-pentadienyltin Reagent and Its Use in Alkaloid Synthesis; An Efficient Route to (±)-Nitraraine. Synlett. 1991(9). 719–720. 3 indexed citations

19.

Yamaguchi, Ryohei, et al.. (1988). Simultaneous 1,2-introduction of allylic and .alpha.,.beta.,.gamma.,.delta.-unsaturated acyl groups into isoquinoline systems and subsequent intramolecular Diels-Alder reactions. Journal of the American Chemical Society. 110(7). 2186–2187. 29 indexed citations

20.

Yamaguchi, Ryohei, et al.. (1987). An efficient regio- and stereoselective synthesis of (.+-.)-monomorine I via the highly regioselective .alpha.-alkynylation of a 1-acylpyridinium salt. The Journal of Organic Chemistry. 52(10). 2094–2096. 43 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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