Hajime Hirao

11.8k total citations · 1 hit paper
216 papers, 10.3k citations indexed

About

Hajime Hirao is a scholar working on Organic Chemistry, Inorganic Chemistry and Materials Chemistry. According to data from OpenAlex, Hajime Hirao has authored 216 papers receiving a total of 10.3k indexed citations (citations by other indexed papers that have themselves been cited), including 118 papers in Organic Chemistry, 108 papers in Inorganic Chemistry and 44 papers in Materials Chemistry. Recurrent topics in Hajime Hirao's work include Metal-Catalyzed Oxygenation Mechanisms (58 papers), Catalytic C–H Functionalization Methods (37 papers) and Pharmacogenetics and Drug Metabolism (27 papers). Hajime Hirao is often cited by papers focused on Metal-Catalyzed Oxygenation Mechanisms (58 papers), Catalytic C–H Functionalization Methods (37 papers) and Pharmacogenetics and Drug Metabolism (27 papers). Hajime Hirao collaborates with scholars based in Singapore, China and Hong Kong. Hajime Hirao's co-authors include Sason Shaik, Devesh Kumar, Lawrence Que, Jianrong Steve Zhou, Rei Kinjo, Keiji Morokuma, Che Chang Chong, Wonwoo Nam, Rakesh Ganguly and Kai Xu and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of the American Chemical Society and Chemical Society Reviews.

In The Last Decade

Hajime Hirao

211 papers receiving 10.2k citations

Hit Papers

Enhanced selectivity in mixed matrix membranes for CO2 ca... 2017 2026 2020 2023 2017 100 200 300 400
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. Enhanced selectivity in mixed matrix membranes for CO2 capture through efficient dispersion of amine-functionalized MOF nanoparticles
    2017 485 citations Kazuki Doitomi, Hajime Hirao et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hajime Hirao Singapore 58 5.2k 4.9k 3.1k 1.6k 1.1k 216 10.3k
Mu‐Hyun Baik South Korea 60 3.8k 0.7× 7.7k 1.6× 2.3k 0.7× 1.4k 0.9× 1.6k 1.5× 304 12.1k
Maxime A. Siegler United States 54 4.5k 0.9× 4.6k 0.9× 3.2k 1.0× 1.2k 0.8× 1.3k 1.2× 381 10.1k
Agustı́ Lledós Spain 55 5.5k 1.0× 8.7k 1.8× 1.7k 0.6× 1.1k 0.7× 888 0.8× 384 12.3k
Feliu Maseras Spain 64 5.6k 1.1× 11.4k 2.3× 2.3k 0.8× 1.4k 0.9× 1.6k 1.4× 314 16.2k
Brian O. Patrick Canada 60 5.0k 1.0× 8.8k 1.8× 3.8k 1.2× 1.8k 1.1× 802 0.7× 588 15.6k
Lev N. Zakharov United States 62 4.3k 0.8× 8.3k 1.7× 5.1k 1.6× 1.3k 0.8× 674 0.6× 381 13.4k
Devesh Kumar India 49 6.0k 1.1× 2.0k 0.4× 2.9k 0.9× 2.4k 1.5× 1.3k 1.2× 169 8.6k
Maren Pink United States 60 3.9k 0.7× 6.9k 1.4× 4.3k 1.4× 777 0.5× 863 0.8× 347 11.8k
John Bacsa United States 55 6.0k 1.1× 5.2k 1.1× 5.2k 1.7× 811 0.5× 829 0.7× 256 11.4k
Régis Guillot France 52 2.6k 0.5× 4.9k 1.0× 2.9k 1.0× 1.6k 1.0× 861 0.8× 393 9.6k

Countries citing papers authored by Hajime Hirao

Since Specialization
Citations

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

Fields of papers citing papers by Hajime Hirao

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hajime Hirao

This figure shows the co-authorship network connecting the top 25 collaborators of Hajime Hirao. A scholar is included among the top collaborators of Hajime Hirao 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 Hajime Hirao. Hajime Hirao 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.
2.
Lee, Seulchan, et al.. (2025). Conformation-driven reversibility control in ring-opening metathesis polymerization of non-bicyclic cyclooctenes. Nature Communications. 16(1). 11109–11109.
3.
Hirao, Hajime, et al.. (2024). Synergistic Charge Transfer Effect in Ferrous Heme–CO Bonding within Cytochrome P450. Molecules. 29(4). 873–873. 4 indexed citations
4.
Zhu, Yong, Song Huang, Qingping Xiong, et al.. (2024). Toward separation and purification of chlorogenic acid from Lonicerae Japonicae Flo (honeysuckle) using melamine–formaldehyde aerogel: A green and efficient approach. Chemical Engineering Journal. 500. 157455–157455. 2 indexed citations
5.
Zhang, Wenqian, et al.. (2024). Nickel‐Catalyzed Enantioconvergent Allenylic Amination of Allenols Activated by Hydrogen‐Bonding Interaction with Methanol. Angewandte Chemie International Edition. 63(40). e202410743–e202410743. 4 indexed citations
6.
Yue, Dongxiao & Hajime Hirao. (2024). Enhancing the high-spin reactivity in C–H bond activation by Iron (IV)-Oxo species: insights from paclitaxel hydroxylation by CYP2C8. Frontiers in Chemistry. 12. 1471741–1471741. 5 indexed citations
7.
Teng, Shenghan, et al.. (2023). Alkynone β-trifluoroborates: A new class of amine-specific biocompatible click reagents. Science Advances. 9(17). eadg4924–eadg4924. 13 indexed citations
8.
Zhang, Luoqiang, Dao‐Yong Zhu, Jingyao Hu, et al.. (2023). Pursuing high efficiency in photocatalytic oxidative couplings of heteroarenes and aliphatic C–H bonds. Organic Chemistry Frontiers. 10(7). 1651–1659. 3 indexed citations
9.
Jin, Youxiang, et al.. (2023). Atom Transfer Radical Coupling Enables Highly Enantioselective Carbo-Oxygenation of Alkenes with Hydrocarbons. Journal of the American Chemical Society. 145(40). 22031–22040. 15 indexed citations
10.
Hirao, Hajime, et al.. (2022). Cooperativity in Shape-Persistent Bis-(Zn-salphen) Catalysts for Efficient Cyclic Carbonate Synthesis under Mild Conditions. Inorganic Chemistry. 61(48). 19543–19551. 5 indexed citations
11.
Jin, Youxiang, et al.. (2022). Photochemical Allylation of Alkanes Enabled by Nickel Catalysis. ACS Catalysis. 12(16). 10039–10046. 19 indexed citations
12.
Wang, Meng-Fan, Yan Mi, Fei-Long Hu, et al.. (2022). Controllable multiple-step configuration transformations in a thermal/photoinduced reaction. Nature Communications. 13(1). 2847–2847. 52 indexed citations
13.
14.
Maraswami, Manikantha, Hajime Hirao, & Teck‐Peng Loh. (2021). Copper-Catalyzed Meta-Selective Arylation of Phenol Derivatives: An Easy Access to m-Aryl Phenols. ACS Catalysis. 11(4). 2302–2309. 16 indexed citations
15.
Mayoral, Álvaro, Qing Zhang, Yi Zhou, et al.. (2020). Direct Atomic‐Level Imaging of Zeolites: Oxygen, Sodium in Na‐LTA and Iron in Fe‐MFI. Angewandte Chemie International Edition. 59(44). 19510–19517. 34 indexed citations
16.
Mayoral, Álvaro, Qing Zhang, Yi Zhou, et al.. (2020). Direct Atomic‐Level Imaging of Zeolites: Oxygen, Sodium in Na‐LTA and Iron in Fe‐MFI. Angewandte Chemie. 132(44). 19678–19685. 2 indexed citations
17.
Ong, Derek Yiren, Ciputra Tejo, Kai Xu, Hajime Hirao, & Shunsuke Chiba. (2017). Hydrodehalogenation of Haloarenes by a Sodium Hydride–Iodide Composite. Angewandte Chemie International Edition. 56(7). 1840–1844. 90 indexed citations
18.
Shen, Liang, Kai Zhao, Kazuki Doitomi, et al.. (2017). Lewis Acid-Catalyzed Selective [2 + 2]-Cycloaddition and Dearomatizing Cascade Reaction of Aryl Alkynes with Acrylates. Journal of the American Chemical Society. 139(38). 13570–13578. 65 indexed citations
19.
Ong, Derek Yiren, Subas Muduli, Pei Chui Too, et al.. (2016). Understanding the Origins of Nucleophilic Hydride Reactivity of a Sodium Hydride–Iodide Composite. Chemistry - A European Journal. 22(21). 7108–7114. 41 indexed citations
20.
Sastri, Chivukula V., Jimin Lee, Kyungeun Oh, et al.. (2007). Axial ligand tuning of a nonheme iron(IV)–oxo unit for hydrogen atom abstraction. Proceedings of the National Academy of Sciences. 104(49). 19181–19186. 370 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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