A. W. Johnson

5.1k citations

216 papers · 4.0k · h-index 33

Impact in

Inorganic Chemistry top 2%
- Metal-Catalyzed Oxygenation Mechanisms
Organic Chemistry top 2%

Papers in

Molecular Biology 111
- Porphyrin Metabolism and Disorders 66
- Chemical Synthesis and Analysis 22
Organic Chemistry 81
- Organic Chemistry Cycloaddition Reactions 20

Co-authors: I. T. Kay (11 shared papers)Gerald Rosebery (2 shared papers)Neil Shaw (7 shared papers)E. Lester Smith (6 shared papers)Ronald Grigg (14 shared papers)Chris Parker (1 shared paper)Michael J. Broadhurst (4 shared papers)David Dolphin (9 shared papers)
Journals: Journal of the Chemical Society Perkin Transactions 1 (24 papers)Tetrahedron Letters (6 papers)Nature (6 papers)Pure and Applied Chemistry (3 papers)Annals of the New York Academy of Sciences (3 papers)
Partner nations: United Kingdom United States Italy

In The Last Decade

A. W. Johnson

209 papers receiving 3.5k citations

Peers

Replace A. Gaudemer with:

A. Gaudemer France

Burchard Franck Germany

J. W. Cornforth United Kingdom

Susanne Refn Denmark

Finian J. Leeper United Kingdom

Rafael Suau Spain

Tadashi Eguchi Japan

Friedrich Weygand Germany

Björn Lüning Sweden

Ronald J. Parry United States

A. W. Johnson relative to A. Gaudemer France A. Gaudemer's profile →

Citations per field

00.5×2×3×4×4.8×

A. Gaudemer · 1×

×1.3 630/502

IC

×1.9 1k/614

OC

×1.8 2k/853

MC

×2.8 407/145

RHEUM

×2.0 2k/857

MB

Citations per year

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Countries citing papers authored by A. W. Johnson

Since Specialization

Citations

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

Fields of papers citing papers by A. W. Johnson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. W. Johnson. 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 A. W. Johnson. The network helps show where A. W. Johnson may publish in the future.

Co-authors

The 25 scholars most cited alongside A. W. Johnson, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with A. W. Johnson Line = papers co-authored together A. W. Johnson links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 216 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	A novel approach to Striga and Orobanche control using synthetic germination stimulants Weed Research ·A. W. Johnson, Gerald Rosebery, Chris Parker	1976	212
2	The preparation of synthetic analogues of strigol Journal of the Chemical Society Perkin Transactions 1 ·A. W. Johnson, Gopala Gowada, Ahmed Hassanali, John R. Knox, Sam Monaco, Zia Razavi, Gerald Rosebery	1981	186
3	Partial Synthesis of Vitamin B12 Coenzyme and Analogues Nature ·E. Lester Smith, Leonard Mervyn, A. W. Johnson, Neil Shaw	1962	110
4	Some reactions of meso-formyloctaethylporhyrin Journal of the Chemical Society Perkin Transactions 1 ·Dennis P. Arnold, A. W. Johnson, Mailvaganam Mahendran	1978	106
5	The synthesis of 22 π-electron macrocycles. Sapphyrins and related compounds Journal of the Chemical Society Perkin Transactions 1 ·Michael J. Broadhurst, Ronald Grigg, A. W. Johnson	1972	94
6	689. Colouring matters derived from pyrroles. Part II. Improved syntheses of some dipyrromethenes and porphyrins Journal of the Chemical Society (Resumed) ·A. W. Johnson, I. T. Kay, E. Markham, Richard A. Price, Kundan Shaw	1959	81
7	404. The adducts from triphenylphosphine and dimethyl acetylenedicarboxylate Journal of the Chemical Society (Resumed) ·A. W. Johnson, John C. Tebby	1961	79
8	785. A partial synthesis of the vitamin B12 coenzyme and some of its analogues Journal of the Chemical Society (Resumed) ·A. W. Johnson, Leonard Mervyn, Neil Shaw, E. Lester Smith	1963	73
9	Sulphur extrusion reactions applied to the synthesis of corroles and related systems Journal of the Chemical Society Perkin Transactions 1 ·Michael J. Broadhurst, R. Grigg, A. W. Johnson	1972	72
10	227. Chemistry of the vitamin B12 group. Part V. The structure of the chromophoric grouping Journal of the Chemical Society (Resumed) ·Raymond Bonnett, J. R. CANNON, V. M. Clark, A. W. Johnson, L. F. J. Parker, E. Lester Smith, A. R. Todd	1957	68
11	287. A synthesis of coproporphyrin III Journal of the Chemical Society (Resumed) ·E. Bullock, A. W. Johnson, E. Markham, Kundan Shaw	1958	67
12	Proteins of chromatin in genetic restriction Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis ·John A. Wilhelm, Allen T. Ansevin, A. W. Johnson, Lubomir S. Hnilica	1972	65
13	787. Chemistry of the vitamin B12 group. Part III. The course of hydrolytic degradations Journal of the Chemical Society (Resumed) ·J. B. Armitage, J. R. CANNON, A. W. Johnson, L. F. J. Parker, E. Lester Smith, William Stafford, A. R. Todd	1953	60
14	Structure of Vitamin B12 : The Structure of Vitamin B12 and its Hexacarboxylic Acid Degradation Product Nature ·Raymond Bonnett, J. R. CANNON, A. W. Johnson, I. G. Sutherland, A. R. Todd, E. Lester Smith	1955	59
15	Wittig condensation products from nickel meso-formyl-octaethyl-porphyrin and -aetioporphyrin I and some cyclisation reactions Journal of the Chemical Society Perkin Transactions 1 ·Dennis P. Arnold, Richard Gaete-Holmes, A. W. Johnson, A. R. P. SMITH, Geoffrey A. Williams	1978	51
16	A Spectrophotometric Rapid Kinetic Study of Reactions Catalysed by Coenzyme‐B₁₂‐Dependent Ethanolamine Ammonia‐Lyase European Journal of Biochemistry ·Michael R. Hollaway, Hugh A. White, K. N. Joblin, A. W. Johnson, Michael F. Läppert, O. Caryl Wallis	1978	48
17	SOME REACTIONS OF THE VITAMIN B₁₂ COENZYME AND ITS ALKYL ANALOGUES Annals of the New York Academy of Sciences ·David Dolphin, A. W. Johnson, R. Rodrigo	1964	48
18	Bis-porphyrin derivatives. Part 1. Reaction of meso-hydroxymethylporphyrinatometal derivatives with acids Journal of the Chemical Society Perkin Transactions 1 ·Dennis P. Arnold, A. W. Johnson, M. Winter	1977	47
19	Alkyl-, aryl-, and acyl-metal(III) complexes of aetioporphyrin I Journal of the Chemical Society C Organic ·D. Clarke, David Dolphin, R. Grigg, A. W. Johnson, H. A. Pinnock	1968	45
20	The stimulant involved in the germination of Orobanche minor Sm. 1. Assay technique and bulk preparation of the stimulant Biochemical Journal ·R. BROWN, A. D. Greenwood, A. W. Johnson, A. G. Long	1951	44

About A. W. Johnson

A. W. Johnson is a scholar working on Molecular Biology, Organic Chemistry, Materials Chemistry, Inorganic Chemistry and Rheumatology, having authored 216 papers that have together received 4.0k indexed citations. Recurring topics across this work include Porphyrin and Phthalocyanine Chemistry (77 papers), Porphyrin Metabolism and Disorders (66 papers), Metal-Catalyzed Oxygenation Mechanisms (28 papers), Folate and B Vitamins Research (23 papers), Chemical Synthesis and Analysis (22 papers), Organic Chemistry Cycloaddition Reactions (20 papers), Fluorine in Organic Chemistry (13 papers) and Microbial Natural Products and Biosynthesis (11 papers). The work is most often cited by research in Inorganic Chemistry (630 citations), Organic Chemistry (1.2k citations), Materials Chemistry (1.6k citations), Rheumatology (407 citations) and Molecular Biology (1.7k citations). A. W. Johnson has collaborated with scholars based in United Kingdom, United States and Italy. Frequent co-authors include I. T. Kay, Gerald Rosebery, Neil Shaw, E. Lester Smith, Ronald Grigg, Chris Parker, Michael J. Broadhurst, David Dolphin, Dennis P. Arnold and A. R. Todd. Their work appears in journals such as Journal of the Chemical Society Perkin Transactions 1, Tetrahedron Letters, Nature, Pure and Applied Chemistry and Annals of the New York Academy of Sciences.

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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