This map shows the geographic impact of Ivan Butula'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 Ivan Butula with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ivan Butula more than expected).
This network shows the impact of papers produced by Ivan Butula. 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 Ivan Butula. The network helps show where Ivan Butula may publish in the future.
Co-authorship network of co-authors of Ivan Butula
This figure shows the co-authorship network connecting the top 25 collaborators of Ivan Butula.
A scholar is included among the top collaborators of Ivan Butula 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 Ivan Butula. Ivan Butula 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.
Perković, Ivana, Ivan Butula, Zrinka Rajić, et al.. (2010). Novel Ureidoamides Derived From Amino Acids: Synthesis and Preliminary Biological Screening. Croatica Chemica Acta. 83(2). 151–161.1 indexed citations
2.
Zorc, Branka, et al.. (2003). Synthesis and reactions of some azolecarboxylic acid derivatives. Croatica Chemica Acta. 76(3). 217–228.12 indexed citations
3.
Butula, Ivan, et al.. (2000). Reactions with 1-benzotriazolecarboxylic acid chloride. VIII. Synthesis of N -hydroxyisocyanate derivatives. Croatica Chemica Acta. 73(2). 569–574.30 indexed citations
4.
Butula, Ivan, et al.. (1997). Chemistry of 1,3-dioxepins. XII.' 4,7-dihydro-5-nitro-1,3-dioxepins in the Diels-Alder reaction with 4-methyloxazole. Croatica Chemica Acta. 70(2). 649–666.
5.
Zorc, Branka, et al.. (1997). Reactions with N-(1-benzotriazolylcarbonyl)amino acids. V. Reactions with hydroxylamine. Acta Pharmaceutica. 47(1). 109–115.2 indexed citations
6.
Zorc, Branka, et al.. (1996). Aspartamide polyhydroxamic acids - synthesis and iron(III) complexes. Croatica Chemica Acta. 69(1). 267–279.5 indexed citations
7.
Dumić, Miljenko, et al.. (1996). Chemistry of 1,3-dioxepins. XI. Bis-(4,7-dihydro-1,3-dioxepin) approach to pyridoxine intermediates 1,5-dihydro-8-methyl-3H-[1,3]dioxepino[5,6-c]pyridin-9-ols. Croatica Chemica Acta. 69(4). 1561–1576.
8.
Butula, Ivan, et al.. (1994). Macromolecular prodrugs. III: Esters of fenoprofen and probenecid. Acta Pharmaceutica. 44(1). 103–108.12 indexed citations
9.
Butula, Ivan, et al.. (1993). Macromolecular prodrugs. I. Synthesis of nonsteroidal anti-inflammatory drug esters. Acta Pharmaceutica. 43(1). 127–133.15 indexed citations
10.
Elshani, Sadik, et al.. (1991). The Synthesis of some B 6 Vitamin Halophosphates. Croatica Chemica Acta. 64(2). 161–171.
11.
Zorc, Branka, et al.. (1991). Reactions with N-(1-benzotriazolylcarbonyl)-amino acids. IV. The use of N-(1-benzotriazolylcarbonyl)-amino acid derivates in peptide synthesis. Croatica Chemica Acta. 63(4). 565–578.4 indexed citations
12.
Dumić, Miljenko, et al.. (1984). Chemistry of 1,3-Dioxepins. 111. Dehydrohalogenation of 5,6-Dihalogen-1,3-Dioxepanes with Strong Bases. University of Zagreb University Computing Centre (SRCE).2 indexed citations
13.
Dumić, Miljenko, et al.. (1984). Chemie der 1, 3-Dioxepinen. III. Palladium-katalysierte Isomerisierung von 4, 7- zu 6, 7-Dihydro-1, 3-dioxepinen. Croatica Chemica Acta. 57. 405–409.1 indexed citations
14.
Butula, Ivan, et al.. (1981). Reaktionen mit 1-Benzotriazolcarbonsaeurechlorid. VII. Die Umsetzung mit Aminosaeuren. Croatica Chemica Acta. 54(4). 435–440.6 indexed citations
15.
Butula, Ivan, et al.. (1981). Reaktionen mit N-(1-Benzotriazolylcarbonyl)-aminosaeuren. I. Synthese von Hydantoinen und Hydantoinsaeure-amiden. Croatica Chemica Acta. 54(4). 441–449.3 indexed citations
16.
Butula, Ivan, et al.. (1981). Reaktionen mit 1-Benzotriazolcarbonsaeurechlorid. VI. Synthese von 3,1-Benzoxazin-4-onen bzw. Quinazolin-2,4-(1H,3H)-dionen. Croatica Chemica Acta. 54(1). 105–108.3 indexed citations
17.
Butula, Ivan, et al.. (1978). Reaktionen mit 1-Benzotriazolcarbonsaurechlorid. IV Synthese von substituierten Harnstoffen, Semicarbaziden und Carbaziden. Croatica Chemica Acta. 51(4). 339–346.6 indexed citations
18.
Butula, Ivan, et al.. (1977). Reactions with 1-benzotriazolecarboxylic acid chloride. I. Synthesis of the 2,6-bis(hydroxymethyl)pyridinedicarbamates. Croatica Chemica Acta. 49(4). 837–842.13 indexed citations
19.
Butula, Ivan, et al.. (1976). Katalytische Hydrierung von Stickstoffhaltigen Heterocyclen. V. Hydrierung von Benzoxazolen. Croatica Chemica Acta. 48(3). 361–364.
20.
Kolbah, D., et al.. (1972). Uber katalytische Hydrierung von Phthalimiden. Croatica Chemica Acta. 44(4). 481–485.2 indexed citations
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