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1

Synthesis of 3-Methyl-4-(4-methylbenzoyl)-1-phenyl-pyrazol-5-one: How To Avoid O-Acylation

Kurteva, Vanya B., Petrova, Maria A.

Journal:

Journal of Chemical Education

Year:

2015

Language:

english

File:

PDF, 735 KB

english, 2015

2

Solvent-free synthesis of melamines under microwave irradiation

Kurteva, Vanya B., Afonso, Carlos A. M.

Journal:

Green Chemistry

Year:

2004

Language:

english

File:

PDF, 126 KB

english, 2004

3

Exploiting Tautomerism for Switching and Signaling

Liudmil Antonov, Vera Deneva, Svilen Simeonov, Vanya Kurteva, Daniela Nedeltcheva, Jakob Wirz

Journal:

Angewandte Chemie

Year:

2009

Language:

english

File:

PDF, 455 KB

english, 2009

4

Exploiting Tautomerism for Switching and Signaling

Liudmil Antonov, Vera Deneva, Svilen Simeonov, Vanya Kurteva, Daniela Nedeltcheva, Jakob Wirz

Journal:

Angewandte Chemie International Edition

Year:

2009

Language:

english

File:

PDF, 456 KB

english, 2009

5

Microwave-Accelerated Facile Synthesis of Fused Polynuclear Hydrocarbons in Dry Media by Intramolecular Friedel—Crafts Alkylation.

Vanya B. Kurteva, Antonio Gil Santos, Carlos A. M. Afonso

Journal:

Year:

2004

File:

PDF, 128 KB

2004

6

A Direct Intramolecular Asymmetric Catalytic Aldol Cyclodehydration of meso-3,4-Disubstituted-1,6-dialdehydes.

Vanya B. Kurteva, Carlos A. M. Afonso

Journal:

Year:

2005

File:

PDF, 19 KB

2005

7

ChemInform Abstract: Chiral Amine-Induced Stereoselectivity in trans-β-Lactam Formation via Staudinger Cycloaddition.

Aleksandar R. Todorov, Vanya B. Kurteva, Ranko P. Bontchev, Nikolay G. Vassilev

Journal:

Year:

2010

File:

PDF, 34 KB

2010

8

ChemInform Abstract: Synthesis of Cyclopentitols by Ring-Closing Approaches

Vanya B. Kurteva, Carlos A. M. Afonso

Journal:

Year:

2010

File:

PDF, 15 KB

2010

9

Tautomerism in 1-phenylazo-4-naphthols: Experimental results vs quantum-chemical predictions

Liudmil Antonov, Vanya Kurteva, Aurelien Crochet, Laurent Mirolo, Katharina M. Fromm, Silvia Angelova

Journal:

Dyes and Pigments

Year:

2012

Language:

english

File:

PDF, 1.41 MB

english, 2012

10

A direct intramolecular asymmetric catalytic aldol cyclodehydration of meso-3,4-disubstituted-1,6-dialdehydes

Vanya B. Kurteva, Carlos A.M. Afonso

Journal:

Year:

2005

Language:

english

File:

PDF, 257 KB

english, 2005

11

Chiral amine-induced stereoselectivity in trans-β-lactam formation via Staudinger cycloaddition

Aleksandar R. Todorov, Vanya B. Kurteva, Ranko P. Bontchev, Nikolay G. Vassilev

Journal:

Year:

2009

Language:

english

File:

PDF, 461 KB

english, 2009

12

Tautocrowns: a concept for a sensing molecule with an active side-arm

Liudmil M. Antonov, Vanya B. Kurteva, Svilen P. Simeonov, Vera V. Deneva, Aurelien Crochet, Katharina M. Fromm

Journal:

Year:

2010

Language:

english

File:

PDF, 609 KB

english, 2010

13

Determination of the diastereoisomeric purity of d,l- and meso-HM-PAO by 13C-NMR spectroscopy

Vanya Kurteva, Svetlana Simova

Journal:

European Journal of Medicinal Chemistry

Year:

2003

Language:

english

File:

PDF, 120 KB

english, 2003

14

Gas-phase tautomerism in 1-phenylazonaphthalene-4-ol: verification of the responses of individual tautomers

Daniela Nedeltcheva, Vanya Kurteva, Boriana Damyanova, Simeon Popov

Journal:

Rapid Communications in Mass Spectrometry

Year:

2009

Language:

english

File:

PDF, 121 KB

english, 2009

15

Gas-phase tautomerism in hydroxy azo dyes – from 4-phenylazo-1-phenol to 4-phenylazo-anthracen-1-ol

Daniela Nedeltcheva, Vanya Kurteva, Ivanka Topalova

Journal:

Rapid Communications in Mass Spectrometry

Year:

2010

Language:

english

File:

PDF, 221 KB

english, 2010

16

A study on the intramolecular catalytic aldol cyclodehydration of 3,4-disubstituted 1,6-dialdehydes

Vanya B. Kurteva, Carlos A.M. Afonso

Journal:

Journal of Molecular Catalysis A: Chemical

Year:

2005

Language:

english

File:

PDF, 261 KB

english, 2005

17

Synthesis of a series of vicinal diamines with potential biological activity

Vanya Kurteva, Maria Lyapova

Journal:

Central European Journal of Chemistry

Year:

2004

Language:

english

File:

PDF, 328 KB

english, 2004

18

Switching azonaphthols containing a side chain with limited flexibility. Part 1. Synthesis and tautomeric properties

Vanya B. Kurteva, Liudmil M. Antonov, Daniela V. Nedeltcheva, Aurélien Crochet, Katharina M. Fromm, Rositsa P. Nikolova, Boris L. Shivachev, Maya S. Nikiforova

Journal:

Dyes and Pigments

Year:

2012

Language:

english

File:

PDF, 1.26 MB

english, 2012

19

Behavior of mixed systems based on para-substituted 4-aroyl-5-pyrazolones in the presence of phosphorus containing calix[4]arene towards lanthanoids: Synergistic solvent extraction and separation

Maria Atanassova, Vanya Kurteva, Lubomir Lubenov, Sabi Varbanov, Ivan Dukov

Journal:

Separation and Purification Technology

Year:

2012

Language:

english

File:

PDF, 629 KB

english, 2012

20

Synthesis of Cyclopentitols by Ring-Closing Approaches

Kurteva, Vanya B., Afonso, Carlos A. M.

Journal:

Chemical Reviews

Year:

2009

Language:

english

File:

PDF, 1.72 MB

english, 2009

21

Synergistic Effect in the Solvent Extraction and Separation of Lanthanoids by 4-(4-Fluorobenzoyl)-3-methyl-1-phenyl-pyrazol-5-one in the Presence of Monofunctional Neutral Organophosphorus Extractants

Petrova, Maria A., Kurteva, Vanya B., Lubenov, Lubomir A.

Journal:

Industrial & Engineering Chemistry Research

Year:

2011

Language:

english

File:

PDF, 897 KB

english, 2011

22

Symmetrical Acyclic Aryl Aldazines with Antibacterial and Antifungal Activity

Kurteva, Vanya B., Simeonov, Svilen P., Stoilova-Disheva, Margarita

Journal:

Pharmacology &amp Pharmacy

Year:

2011

Language:

english

File:

PDF, 282 KB

english, 2011

23

Tautomerism of 4,4′-dihydroxy-1,1′-naphthaldazine studied by experimental and theoretical methods

Ahmedova, Anife, Simeonov, Svilen P, Kurteva, Vanya B, Antonov, Liudmil

Journal:

Chemistry Central Journal

Year:

2013

Language:

english

File:

PDF, 586 KB

english, 2013

24

A CONVENIENT SYNTHESIS OF 3-(2-METHYLPYRIDYL)ACETIC ACID METHYL ESTER, A PYRITHIAMINE INTERMEDIATE

Ivanova, Milena E., Kurteva, Vanya B., Lyapova, Maria J.

Journal:

Organic Preparations and Procedures International

Year:

1994

Language:

english

File:

PDF, 180 KB

english, 1994

25

Synergistic Efficiency of 2-[(1-Aza-15-crown-5)-1-ylmethyl)]-4-(phenyldiazenyl)-naphthalen-1-ol in the Liquid Extraction of Light Lanthanoid(III) Ions with 4-Benzoyl-3-phenyl-5-isoxazolone: The Role of Aza-Crown and Azo-Dye Fragments on the Extraction Ability

Petrova, Maria A., Kurteva, Vanya B.

Journal:

Journal of Chemical & Engineering Data

Year:

2014

Language:

english

File:

PDF, 1.52 MB

english, 2014

26

Comparing extraction, synergism and separation of lanthanoids using acidic and neutral compounds in chloroform and one ionic liquid: is the latter always “better”?

Atanassova, Maria, Kurteva, Vanya, Lubenov, Lubomir, Billard, Isabelle

Journal:

Year:

2014

Language:

english

File:

PDF, 346 KB

english, 2014

27

Microwave accelerated facile synthesis of fused polynuclear hydrocarbons in dry media by intramolecular Friedel?Crafts alkylation

Kurteva, Vanya B., Santos, Ant�nio Gil, Afonso, Carlos A. M.

Journal:

Organic & Biomolecular Chemistry

Year:

2004

Language:

english

File:

PDF, 344 KB

english, 2004

28

Simple transformation of crystalline chiral natural anions to liquid medium and their use to induce chirality

Branco, Lu?s C., Gois, Pedro M. P., Louren?o, Nuno M. T., Kurteva, Vanya B., Afonso, Carlos A. M.

Journal:

Chemical Communications

Year:

2006

Language:

english

File:

PDF, 216 KB

english, 2006

29

Controlled tautomerism – switching caused by an “underground” anionic effect

Antonov, Liudmil, Deneva, Vera, Kurteva, Vanya, Nedeltcheva, Daniela, Crochet, Aurelien, Fromm, Katharina M.

Journal:

Year:

2013

Language:

english

File:

PDF, 669 KB

english, 2013

30

CONFORMATIONS OF 4,5,6-TRIPHENYL-TETRAHYDRO-1,3-THIAZINE-2-THIONES AND THEIR N-ALKYL DERIVATIVES. UNUSUAL THIAZINETHIONE OR AZETIDINE FORMATION UPON REACTION OF 3-AMINO- AND 3-METHYLAMINO-1,2,3-TRIPHENYLPROPYL CHLORIDES WITH POTASSIUM ETHYLXANTHATE

Kurteva, Vanya B., Lyapova, Maria J.

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2000

Language:

english

File:

PDF, 401 KB

english, 2000

31

Controlled Tautomeric Switching in Azonaphthols Tuned by Substituents on the Phenyl Ring

Antonov, Liudmil, Deneva, Vera, Simeonov, Svilen, Kurteva, Vanya, Crochet, Aurelien, Fromm, Katharina M., Shivachev, Boris, Nikolova, Rositsa, Savarese, Marika, Adamo, Carlo

Journal:

Year:

2015

Language:

english

File:

PDF, 1.53 MB

english, 2015

32

( E )-1-(4-Methoxyanthracen-1-yl)-2-phenyldiazene

Crochet, Aurelien, Fromm, Katharina M., Kurteva, Vanya, Antonov, Liudmil

Journal:

Acta Crystallographica Section E Structure Reports Online

Year:

2011

Language:

english

File:

PDF, 779 KB

english, 2011

33

One Pot Synthesis and X-ray Crystallographic Investigation of p - t -Butylcalix[4]arenes with Flexible Narrow Rim Dimethylphosphinoylpropoxy Ligating Groups

Kurteva, Vanya, Varbanov, Sabi, Frank, Walter

Journal:

Supramolecular Chemistry

Year:

2006

Language:

english

File:

PDF, 201 KB

english, 2006

34

Are fancy acidic or neutral ligands really needed for synergism in ionic liquids? A comparative study of lanthanoids extraction in CHCl3 and an ionic liquid.

Atanassova, Maria, Billard, Isabelle, Kurteva, Vanya, Lubenov, Lubomir A, Varbanov, Sabi

Journal:

New Journal of Chemistry

Year:

2015

Language:

english

File:

PDF, 1019 KB

english, 2015

35

Conformational behaviour of 3-methyl-4-(4-methylbenzoyl)-1-phenyl-pyrazol-5-one: a sudden story of three desmotrops

Kurteva, Vanya, Shivatchev, Boris, Petrova, Rosica, Antonov, Liudmil, Lubenov, Lubomir A, Atanassova, Maria, Simova, Svetlana

Journal:

Year:

2015

Language:

english

File:

PDF, 1.80 MB

english, 2015

36

NMR Study on the Possible Interactions Between Imidazolium Based Ionic Liquids and Extractants Widely Applied in Solvent Extraction and Separation of f-Ions

Kurteva, Vanya, Atanassova, Maria, Billard, Isabelle

Journal:

Journal of Solution Chemistry

Year:

2015

Language:

english

File:

PDF, 1.40 MB

english, 2015

37

Synergism as a phenomenon in solvent extraction of 4f-elements with calixarenes

Atanassova, Maria, Kurteva, Vanya

Journal:

Year:

2016

Language:

english

File:

PDF, 1.99 MB

english, 2016

38

Synthesis of Chiral Cyclopentenones

Simeonov, Svilen P., Nunes, João P. M., Guerra, Krassimira, Kurteva, Vanya B., Afonso, Carlos A. M.

Journal:

Chemical Reviews

Year:

2016

Language:

english

File:

PDF, 16.58 MB

english, 2016

39

ChemInform Abstract: Synergism as a Phenomenon in Solvent Extraction of 4f-Elements with Calixarenes

Atanassova, Maria, Kurteva, Vanya

Journal:

Year:

2016

File:

PDF, 16 KB

2016

40

ChemInform Abstract: Synthesis of Chiral Cyclopentenones

Simeonov, Svilen P., Nunes, Joao P. M., Guerra, Krassimira, Kurteva, Vanya B., Afonso, Carlos A. M.

Journal:

Year:

2016

File:

PDF, 16 KB

2016

41

The interaction of extractants during synergistic solvent extraction of metals. Is it an important reaction?

Atanassova, Maria, Kurteva, Vanya, Dukov, Ivan

Journal:

Year:

2016

Language:

english

File:

PDF, 1.78 MB

english, 2016

42

Gas-phase study of molecular switches based on tautomeric proton transfer

Nedeltcheva, Daniela, Kurteva, Vanya, Antonov, Liudmil

Journal:

European Journal of Mass Spectrometry

Year:

2011

Language:

english

File:

PDF, 1.03 MB

english, 2011

43

Crystal structures of novel polydentate N,O-ligands

Todorova, Stanislava, Kurteva, Vanya, Shivachev, Boris, Nikolova, Rositsa P.

Journal:

Acta Crystallographica Section A Foundations and Advances

Year:

2016

Language:

english

File:

PDF, 1.09 MB

english, 2016

44

Coordination Chemistry of Europium(III) Ion Towards Acylpyrazolone Ligands

ATANASSOVA, Maria, KURTEVA, Vanya, BILLARD, Isabelle

Journal:

Analytical Sciences

Year:

2015

Language:

english

File:

PDF, 801 KB

english, 2015

45

Peculiar synergistic extraction behavior of Eu(III) in ionic liquids: Benzoylacetone and CMPO fusion

Atanassova, Maria, Kurteva, Vanya

Journal:

Separation and Purification Technology

Year:

2017

Language:

english

File:

PDF, 1.18 MB

english, 2017

46

Insights into the synergistic selectivity of 4f-ions implementing 4-acyl-5-pyrazolone and two new unsymmetrical NH-urea ring molecules in an ionic liquid

Atanassova, Maria, Todorova, Stanislava, Kurteva, Vanya, Todorova, Nina

Journal:

Separation and Purification Technology

Year:

2018

Language:

english

File:

PDF, 1.22 MB

english, 2018

47

Prenylated β-diketones, two new additions to the family of biologically active Hypericum perforatum L. (Hypericaceae) secondary metabolites

Radulović, Niko S., Genčić, Marija S., Stojanović, Nikola M., Randjelović, Pavle J., Baldovini, Nicolas, Kurteva, Vanya

Journal:

Food and Chemical Toxicology

Year:

2018

Language:

english

File:

PDF, 2.23 MB

english, 2018

48

Data on the synthesis and characterization of two novel polydentate ligands possessing unsymmetrical NH–urea fragment

Todorova, Stanislava, Atanassova, Maria, Kurteva, Vanya

Journal:

Year:

2018

Language:

english

File:

PDF, 688 KB

english, 2018

49

Betti Bases from 4-(3-Pyridazo)-1-naphthol: Synthesis, Coordination Behaviour and Unusual Substitution Reactions

Kurteva, Vanya B., Lubenov, Lubomir A., Shivachev, Boris L., Nikolova, Rositsa P., Fromm, Katharina M.

Journal:

ChemistrySelect

Year:

2018

Language:

english

File:

PDF, 990 KB

english, 2018

50

Novel Quaternary Ammonium Derivatives of 4-Pyrrolidino Pyridine: Synthesis, Structural, Thermal, and Antibacterial Studies

Rusew, Rusi, Kurteva, Vanya, Shivachev, Boris

Journal:

Year:

2020

File:

PDF, 1.75 MB

2020