Usama Karama

420 total citations
30 papers, 322 citations indexed

About

Usama Karama is a scholar working on Organic Chemistry, Oncology and Pharmacology. According to data from OpenAlex, Usama Karama has authored 30 papers receiving a total of 322 indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Organic Chemistry, 5 papers in Oncology and 4 papers in Pharmacology. Recurrent topics in Usama Karama's work include Asymmetric Synthesis and Catalysis (8 papers), Synthetic Organic Chemistry Methods (6 papers) and Phosphorus compounds and reactions (5 papers). Usama Karama is often cited by papers focused on Asymmetric Synthesis and Catalysis (8 papers), Synthetic Organic Chemistry Methods (6 papers) and Phosphorus compounds and reactions (5 papers). Usama Karama collaborates with scholars based in Saudi Arabia, Germany and Malaysia. Usama Karama's co-authors include Abdulrahman I. Almansour, Gerhard Höfle, Natarajan Arumugam, R. Raghunathan, Michael E. Jung, Rodolfo Márquez, Nicole Glaser, Florenz Sasse, Mujeeb A. Sultan and Heinrich Steinmetz and has published in prestigious journals such as SHILAP Revista de lepidopterología, The Journal of Organic Chemistry and Molecules.

In The Last Decade

Usama Karama

28 papers receiving 312 citations

Peers

Usama Karama
Martina Drescher Austria
Neil F. Langille United States
Suzanne Gelin France
Akshay A. Shah United States
Kenneth J. McRae Australia
Pradipta K. Basu India
Marie‐Isabelle Lannou France
Sarah E. Wengryniuk United States
Elias Picazo United States
Naohiro Isono Japan
Martina Drescher Austria
Usama Karama
Citations per year, relative to Usama Karama Usama Karama (= 1×) peers Martina Drescher

Countries citing papers authored by Usama Karama

Since Specialization
Citations

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

Fields of papers citing papers by Usama Karama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Usama Karama

This figure shows the co-authorship network connecting the top 25 collaborators of Usama Karama. A scholar is included among the top collaborators of Usama Karama 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 Usama Karama. Usama Karama 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.
Al-Odayni, Abdel-Basit, Taı̈eb Aouak, Abdulaziz Alghamdi, et al.. (2017). Ibuprofen grafted on poly(2-hydroxyethylmethacrylate): Synthesis, mass transfer, andin vitrodrug release investigations. International Journal of Polymeric Materials. 67(1). 36–49. 3 indexed citations
2.
Sultan, Mujeeb A., Usama Karama, Abdulrahman I. Almansour, et al.. (2017). Synthesis, Characterization and DFT Calculations of 4,5,12- and 1,8,12-trichloro-9,10-dihydro-9,10-ethanoanthracene-12-carbonitriles. Crystals. 7(9). 259–259. 3 indexed citations
3.
Sultan, Mujeeb A., et al.. (2016). Crystal structure of 9-allyl-4,5-dichloro-12-cyano-9,10-dihydro-9,10-ethanoanthracen-12-yl acetate, C22H17Cl2NO2. Zeitschrift für Kristallographie - New Crystal Structures. 231(3). 801–803. 1 indexed citations
4.
Sultan, Mujeeb A., Usama Karama, Abdulrahman I. Almansour, & Saied M. Soliman. (2016). Theoretical Study on Regioselectivity of the Diels-Alder Reaction between 1,8-Dichloroanthracene and Acrolein. Molecules. 21(10). 1277–1277. 7 indexed citations
5.
6.
7.
Karama, Usama, et al.. (2013). Crystal structure of 4,5-dichloro-anthracen-9(10H)-one, C14H8Cl2O. SHILAP Revista de lepidopterología. 228(3). 405–406. 3 indexed citations
8.
Karama, Usama, et al.. (2012). One-Pot Combination of the Wittig Olefination with Bromination and Oxidation Reactions. Synthetic Communications. 43(6). 893–898. 3 indexed citations
9.
Al‐Bogami, Abdullah S., et al.. (2012). Simple and Efficient One Step Synthesis of Functionalized Flavanones and Chalcones. Oriental Journal Of Chemistry. 28(2). 619–626. 25 indexed citations
10.
Arumugam, Natarajan, R. Raghunathan, Abdulrahman I. Almansour, & Usama Karama. (2011). An efficient synthesis of highly functionalized novel chromeno[4,3-b]pyrroles and indolizino[6,7-b]indoles as potent antimicrobial and antioxidant agents. Bioorganic & Medicinal Chemistry Letters. 22(3). 1375–1379. 61 indexed citations
11.
Warad, Ismail, Mohammad Azam, Usama Karama, et al.. (2011). Synthesis, spectroscopic characterization and catalytic significance of Palladium(II) complexes derived from 1,1 bis(diphenylphosphinomethyl)ethane. Journal of Molecular Structure. 1002(1-3). 107–112. 15 indexed citations
12.
Karama, Usama, et al.. (2011). Computational and Spectral Investigation of 5,12-Dihydro-5,12-ethanonaphthacene-13-carbaldehyde. Molecules. 16(8). 6741–6746. 3 indexed citations
13.
Arumugam, Natarajan, Abdulrahman I. Almansour, Usama Karama, Mohd Mustaqim Rosli, & Ibrahim Abdul Razak. (2011). 9-(Pent-4-enyl)anthracene. Acta Crystallographica Section E Structure Reports Online. 67(9). o2251–o2251. 3 indexed citations
14.
Karama, Usama, Zeid A. ALOthman, Abdullah Mohammed Al‐Majid, & Abdulrahman I. Almansour. (2010). A Facile One-Pot Synthesis of α-Bromo-α,β-unsaturated Esters from Alcohols. Molecules. 15(5). 3276–3280. 10 indexed citations
15.
Karama, Usama, et al.. (2010). Synthesis of 2-(9,10-Dihydro-9,10-propanoanthracen-9-yl)-N-methylethanamine via a [4+2] Cycloaddition. Molecules. 15(6). 4201–4206. 3 indexed citations
16.
Karama, Usama. (2010). One-Pot Approach to the Conversion of Alcohols into α-Iodo-α,β-unsaturated Esters. Synthetic Communications. 40(23). 3447–3451. 8 indexed citations
17.
Karama, Usama. (2009). One-pot synthesis of (E)-α-chloro-α,β-unsaturated esters. Journal of Chemical Research. 2009(7). 405–406. 4 indexed citations
18.
Höfle, Gerhard, et al.. (2003). Semisynthesis and Degradation of the Tubulin Inhibitors Epothilone and Tubulysin. ChemInform. 34(42). 1 indexed citations
19.
Jung, Michael E. & Usama Karama. (1999). Highly diastereoselective Markovnikov hydration of 3,4-dialkoxy-1-alkenes and 4,5-dialkoxy-2-alkenes via a hydroboration-oxidation process. Tetrahedron Letters. 40(45). 7907–7910. 4 indexed citations
20.
Jung, Michael E., Usama Karama, & Rodolfo Márquez. (1999). Conversion of Homoallylic Alcohols with Alkene Protection to the Corresponding Methyl Ketones. The Journal of Organic Chemistry. 64(2). 663–665. 32 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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