J. A. VAN ALLAN

516 total citations
38 papers, 358 citations indexed

About

J. A. VAN ALLAN is a scholar working on Organic Chemistry, Pharmacology and Spectroscopy. According to data from OpenAlex, J. A. VAN ALLAN has authored 38 papers receiving a total of 358 indexed citations (citations by other indexed papers that have themselves been cited), including 34 papers in Organic Chemistry, 18 papers in Pharmacology and 6 papers in Spectroscopy. Recurrent topics in J. A. VAN ALLAN's work include Synthesis of Organic Compounds (18 papers), Synthesis of heterocyclic compounds (9 papers) and Synthesis and Reactivity of Sulfur-Containing Compounds (6 papers). J. A. VAN ALLAN is often cited by papers focused on Synthesis of Organic Compounds (18 papers), Synthesis of heterocyclic compounds (9 papers) and Synthesis and Reactivity of Sulfur-Containing Compounds (6 papers). J. A. VAN ALLAN collaborates with scholars based in United States and France. J. A. VAN ALLAN's co-authors include G. A. Reynolds, Thomas H. Whitesides, Donald D. Giannini, J. L. R. Williams, Chin H. Chen, Andreas Seidel, S. Farid, Mary Ann Hill, D. Joseph Daniel and Nicholas Zumbulyadis and has published in prestigious journals such as Analytical Chemistry, The Journal of Organic Chemistry and Tetrahedron.

In The Last Decade

J. A. VAN ALLAN

36 papers receiving 327 citations

Peers

J. A. VAN ALLAN

PHARM

PTC

SPECT

Erich Singer Germany

Haruko Takechi Japan

C.‐W. Schellhammer Germany

Tomoo Nakazawa Japan

B. HALTON New Zealand

Douglas Lloyd Belgium

M. P. SAMMES Hong Kong

Kunihide Fujimori Japan

Edward Carberry United States

Anil N. Abeywickrema Australia

Erich Singer Germany

J. A. VAN ALLAN

360 ×1.3

44 ×0.4

45 ×0.5

PHARM

35 ×0.7

PTC

26 ×0.7

SPECT

Citations per year, relative to J. A. VAN ALLAN J. A. VAN ALLAN (= 1×) peers Erich Singer

Countries citing papers authored by J. A. VAN ALLAN

Since Specialization

Citations

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

Fields of papers citing papers by J. A. VAN ALLAN

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. A. VAN ALLAN. 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 J. A. VAN ALLAN. The network helps show where J. A. VAN ALLAN may publish in the future.

Co-authorship network of co-authors of J. A. VAN ALLAN

This figure shows the co-authorship network connecting the top 25 collaborators of J. A. VAN ALLAN. A scholar is included among the top collaborators of J. A. VAN ALLAN 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 J. A. VAN ALLAN. J. A. VAN ALLAN 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

ALLAN, J. A. VAN, Donald D. Giannini, & Thomas H. Whitesides. (1982). Dibenzoxanthene derivatives and related products from .beta.-naphthol and aldehydes or acetals. The Journal of Organic Chemistry. 47(5). 820–823. 60 indexed citations

ALLAN, J. A. VAN & G. A. Reynolds. (1980). Merocyanine dyes from 4‐dicyanomethylene‐2,6‐dimethyl‐4H‐pyran. Journal of Heterocyclic Chemistry. 17(7). 1585–1586. 4 indexed citations

Reynolds, G. A., Chin H. Chen, & J. A. VAN ALLAN. (1979). Synthesis of certain bispyranylidene and bis(thiopyranylidene) derivatives. The Journal of Organic Chemistry. 44(24). 4456–4458. 22 indexed citations

Reynolds, G. A. & J. A. VAN ALLAN. (1978). Synthesis of 2[(4,6‐diphenyl‐2H‐pyran‐2‐ylidene)methyl]‐4,6‐diphenylpyrylium perchlorate. Journal of Heterocyclic Chemistry. 15(7). 1225–1226. 3 indexed citations

ALLAN, J. A. VAN & G. A. Reynolds. (1977). Some reactions of 5h‐indeno[2,1‐b ]pyrylium, thiopyrylium and pyridinium derivatives. Journal of Heterocyclic Chemistry. 14(1). 119–122. 2 indexed citations

ALLAN, J. A. VAN, et al.. (1977). The reaction of 2,6‐diphenyl‐2,3,5,6‐tetrahydro‐4H‐thiopyran‐4‐one with sulfuryl chloride. Journal of Heterocyclic Chemistry. 14(8). 1399–1402. 2 indexed citations

ALLAN, J. A. VAN & G. A. Reynolds. (1976). Reactions of pyranylidenemethylpyrylium salts with ammonia and amines. Journal of Heterocyclic Chemistry. 13(3). 577–579. 2 indexed citations

Reynolds, G. A. & J. A. VAN ALLAN. (1975). Solvent shifts of certain aminoarylpyrylium salts. Journal of Heterocyclic Chemistry. 12(2). 367–368. 3 indexed citations

ALLAN, J. A. VAN, et al.. (1975). The reaction of α‐haloketones with N‐alkyl benzothiazolium salts. Journal of Heterocyclic Chemistry. 12(5). 1005–1007. 3 indexed citations

10.

ALLAN, J. A. VAN, et al.. (1974). The reaction of some 4‐pyrones with activated isocyanates. Journal of Heterocyclic Chemistry. 11(2). 195–198. 12 indexed citations

11.

ALLAN, J. A. VAN & G. A. Reynolds. (1974). The preparation and some reactions of a 2,1‐benzisoxazol‐3‐ylpyrylium salt. Journal of Heterocyclic Chemistry. 11(3). 395–396.

12.

ALLAN, J. A. VAN, et al.. (1974). New class of ionic associates for the nonaqueous standardization of acids and bases. Analytical Chemistry. 46(3). 443–444. 4 indexed citations

13.

ALLAN, J. A. VAN, et al.. (1973). ChemInform Abstract: PHOTOCHEMICAL CONVERSION OF 4‐(O‐NITROBENZYLIDENE)‐4H‐PYRANS TO 1‐HYDROXY‐3‐OXOSPIRO‐(INDOLINE‐2,4′‐(4′H)PYRAN) DERIVATIVES. Chemischer Informationsdienst. 4(46). 2 indexed citations

14.

Reynolds, G. A., et al.. (1973). The spectroscopy of pyrylium salts. Tetrahedron. 29(6). 795–803. 38 indexed citations

15.

ALLAN, J. A. VAN, et al.. (1972). The reactions of some pyranylideneiminium salts with amines. Part 1. Journal of Heterocyclic Chemistry. 9(6). 1229–1233. 4 indexed citations

16.

Reynolds, G. A. & J. A. VAN ALLAN. (1972). The reactions of pyranylidenemethylpyrylium salts with sodium sulfide. Journal of Heterocyclic Chemistry. 9(5). 1105–1107. 2 indexed citations

17.

ALLAN, J. A. VAN, et al.. (1972). The reactions of some pyraiiylideneiminium salts with amines. II. Journal of Heterocyclic Chemistry. 9(6). 1245–1249. 2 indexed citations

18.

ALLAN, J. A. VAN & G. A. Reynolds. (1971). Reactions of some pyranylidene esters with amines. Journal of Heterocyclic Chemistry. 8(5). 803–807. 8 indexed citations

19.

Reynolds, G. A., J. A. VAN ALLAN, & D. Joseph Daniel. (1970). Preparation of 4‐methylflavylium derivatives. Journal of Heterocyclic Chemistry. 7(6). 1395–1396. 6 indexed citations

20.

Reynolds, G. A. & J. A. VAN ALLAN. (1969). The reactions of 2,2‐difluoro‐4‐methylnaphtho[l,2‐e]‐1,3,2‐dioxaborin and its [2,1‐e]isomer with N,N‐dimethylformamide. Journal of Heterocyclic Chemistry. 6(3). 375–377. 23 indexed citations

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