Mihai Cosmin Pascariu, Madian Rafailă, Mihai Medeleanu, Valentin Badea, Alexandra Teodora Gruia, Victor Lorin Purcarea, Mircea Penescu, Eugen Sisu “Computational search for long bonds in radical cations of sugars 1. Glucofuranose, galactofuranose and mannofuranose di-o-isopropylidene derivatives”, FARMACIA, 2016, Vol. 64 (4), 553-564.

Gheorghe Ilia, Smaranda Iliescu, Adriana Popa, Aurelia Visa, Bianca Maranescu, Vasile Simulescu, Miloslav Pekar, Valentin Badea “Poly(alkylene-H-phosphonate)s obtained by direct esterification and oxidation of hypophosphorous acid with ethylene glycol”, JOURNAL OF MACROMOLECULAR SCIENCE, PART A: PURE AND APPLIED CHEMISTRY, 2016, VOL. 53, NO. 1, 49–54, http://dx.doi.org/10.1080/10601325.2016.111045
Carmen Cretu, Liliana Cseh, Bai J. Tang, Viorel Sasca, Valentin Badea, Elisabeta I. Szerb, Sergiu Shova, Georg Mehl, Otilia Costisor, “Mononuclear Cu(II) complexes of novel salicylidene Schiff bases: synthesis and mesogenic properties”, Liquid Crystals, 2015, 42(8), 1139-1147,  http://dx.doi.org/10.1080/02678292.2015.1028491.
I. Ledeți, C. S. Boșca, C. Cosma, V. Badea*, A. Todea, V.-N. Bercean,Study on Obtaining 3-oxolup-20(29)-en-28-oic Acid (Betulonic Acid) from (3ß)-lup-20(29)-en-3,28-diol (betulin), Rev. Chim. (Buc.), 2014, 65(11), 1289-1293
A. Todea, E. Biro, V. Badea, C. Paul, A. Cimporescu, L. Nagy, S. Kéki, G. Bandur, C. Boeriu, F. Péter, Optimization of enzymatic ring-opening copolymerizations involving δ-gluconolactone as monomer by experimental design, Pure Appl. Chem., 2014, 86(11), 1781-1792
A. Todea, V. Badea, L. Nagy, S. Kéki, C. G. Boeriu, F. Péter, Biocatalytic synthesis of d-gluconolactone and e-caprolactone copolymers, Acta Biochimica Polonica,2014, 61(2), 205-210
A.-M. Pană, V. Badea, R. Bănică, A. Bora, Z. Dudas, L. Cseh, O. Costisor, Network  reaction of   2,6-bis(2-hydroxybenzilidene)cyclohexanone by external stimuli, Journal of Photochemistry and Photobiology A: Chemistry, 2014, 283, 22–28
V.-N. Bercean, Valentin Badea*, C. Deleanu, A. Nicolescu, New 1H-1-alkyl-6-methyl-3-phenyl-7-phenylazo-pyrazolo[5,1-c][1,2,4] triazoles through regioselective alkylation of 1H-6-methyl-3-phenyl-7-phenylazo-pyrazolo[5,1-c][1,2,4] triazoles, Cent. Eur. J. Chem., 2012, 10(2), 373-379
A. Palani, V. Badea, E. Gerasimou, S. Niţu, C. Csunderlik, M. Simon, Synthesis of N-carbamylimides by a New More Efficient Method, Rev. Chim. (Buc.), 2011, 62(6), 614-617
A. Palani, V. Badea, E. Gerasimou, S. Niţu, C. Csunderlik, M. Simon, Synthesis of Various N-carbamylamic Acids, Rev. Chim. (Buc.), 2011, 62(5), 579-581
V.-N. Bercean, S. V. Niţu, V. Badea, V. L. Ordodi, C. Csunderlik, Azo Compounds Derived from 1H-5-amino-4-ethoxycarbonyl-3-methylpyrazole and Phenols or Phenolic Derivatives and Possibilities of Their Cyclization to Pyrazolo[5,1-c]benzo[1,2-e][1,2,4]triazines
Rev. Chim. (Buc.), 2011, 62(2), 154-157
V.-N. Bercean, A.-A. Creangă, V. Badea, C. Deleanu, C. Csunderlik, (New) 5-Substituted-4H-4-amino-3-mercapto-1,2,4-triazoles with Increased Complexing Capabilities,Rev. Chim. (Buc.), 2011, 62(1), 47-50
A.-M. Pană, L.-M. Rusnac, G. Bandur, E. Şişu, V. Badea, M. Silion, Synthesis and Characterization of New Glycopolymers based on Monosaccharides and Maleic Anhydride.  I. Glucose derivatives, Rev. Materiale Plastice (Buc.), 2010, 47(1), 28-34
M. Simon, C. M. Turoczi, V. Badea, M. Pop, V. Zaharia, C. Csunderlik, Synthesis of Symmetrically N,N’-di-substituted Aliphatic Ureas by Reaction of bis(o-nitrophenyl) Carbonate with Primary Amines, Rev. Chim. (Buc.), 2010, 61(4), 380-382
V.-N. Bercean, S. V. Niţu, V. Badea, A. Nicolescu, C. Csunderlik, New Azo Compounds Derived from 1H-5-amino-4-ethoxycarbonyl-3-methyl-pyrazole and 3-mono- or 1,3-disubstituted pyrazol-5-ones, Rev. Chim. (Buc.), 2010, 61(4), 364-367
C. Csunderlik, M. Simon, A. Micle, V. Badea, A. Palani, E. Gerasimou, Reactions of N,N’-carbonyl disuccinimide with Nitrogen-containing Nucleophiles, Rev. Chim. (Buc.), 2010, 61(7), 638-641
I. V. Ledeţi, Vasile N. Bercean, V. Badea, M. Bălan, C. Csunderlik, The Alkylation of 1H-5-mercapto-3-phenyl -1,2,4-triazole and 4H-4-amino-5-mercapto-3-phenyl -1,2,4-triazole,Rev. Chim. (Buc.), 2010, 61(9), 833-837
I. V. Ledeti, V.-N. Bercean, I. M. Tănase, A.-A. Creangă, V. Badea, C. Csunderlik, New Azomethine Derivatives of 3-substituted-4H-4-amino-5-ethoxycarbonyl-methylsulfanyl-1,2,4-triazoles as Potential Anti-inflammatory Agents, Rev. Chim. (Buc.), 2010, 61(10), 937-939
V.-N. Bercean, I. V. Ledeţi, V. Badea, M. Bălan, C. Csunderlik, New Heterocyclic Tioether Derived from 3-substituted-4H-4-amino-5-mercapto-1,2,4-triazole and Succinic Acid, Rev. Chim. (Buc.), 2010, 61(11), 1028-1030
A.-A. Creanga, V.-N. Bercean, V. Badea, A. I. Patras, A. I. Cocarta, C. A. Tatu, C. Csunderlik, Comparative Study for the Synthesis of Some 5-(2-, 3-, 4-pyridyl)Substituted-4H-4-Amino-3-Mercapto-1,2,4-Triazoles, Rev. Chim. (Buc.), 2010, 61(12), 1169-1172
V.-N. Bercean, M.-L. Turlea, V. Badea, A.-A. Creangă, M. Medeleanu, New 5-Substituted 2-Mercapto-1,3,4-Oxadiazoles, Intermediates in the Synthesis of 5-Substituted 4H-4-Amino-3-Mercapto-1,2,4-Triazoles
Rev. Chim. (Buc.), 2009, 60(9), 893-895
I. Şişu, V. Bercean, V. Badea, M. T. Căproiu, E. Şişu, S-Thioribofuranoside of Mercaptotriazole, Rev. Chim. (Buc.), 2009, 60(9), 880-882
M. Simon, A. Micle, V. Badea, C. Csunderlik, Bis(O-nitrophenyl) Carbonate as a New Reagent for the Synthesis of Chiral Oxazolidin-2-ones, Synthetic Communications, 2009, 39(15), 2633-2639
M.-C. Turoczi , M. Simon, V. Badea, C. Csunderlik, Synthesis of Bis-ureas from Bis(o-nitrophenyl) Carbonate, Molecules, 2008, 13, 3192-3197
S. Niţu, V.-N. Bercean, V. Badea, A.-A Creangă, C. Csunderlik, Azoic compounds obtained from 1H-5-amino-4-ethoxycarbonyl-3-methyl-pyrazole and phenols or phenolic derivatives, Rev. Chim. (Buc.), 2008, 59(12), 1352-1354
L. V.  Costea, V.-N. Bercean, V. Badea, G. Fafilek, A. Chiriac, Anodic oxidation of some 1H-3-methyl-4-ethoxycarbonil-5-arilidenhydrazino-pyrazoles: substitution effects and linear free energy relationships, Rev. Chim. (Buc.), 2008, 59(6), 691-693
M.-D. Şofei, M. Ilici, V. Badea, C. Csunderlik, V. N. Bercean, Synthesis and characterization of some new 1H-3-aryl-7-ethoxy carbonyl-6-methyl-pyrazolo[5,1-c] [1,2,4]triazoles, Rev. Chim. (Buc.), 2008, 59(1), 41-44
E. Fagadar-Cosma, L. Cseh, V. Badea, G. Fagadar-Cosma, D. Vlascici, Combinatorial Synthesis and Characterization of New Asymmetric Porphyrins as Potential Photosensitizers in Photodynamic Therapy, Combinatorial Chemistry & High Throughput Screening, 2007,Vol. 10, No. 6, 466-472
A. Segneanu, M. Milea, V. Badea, C. Csunderlik, Utilizarea carbonaţilor micşti de N-succinimidil la protejarea grupelor amino din amine şi aminoacizi, Rev. Chim. (Buc.), 2007, 58(10), 927-931
V. N. Bercean, V. Badea, M.-D. Şofei, L. V. Costea, C. Csunderlik, Azoic and azomethinic dyes derivatives of 1H-6-methyl-3-phenyl-pyrazolo[5,1-c][1,2,4]triazole, Rev. Chim. (Buc.), 2007, 58(8), 791-794
A. Segneanu, M. Milea, V. Badea, C. Csunderlik, Reacţii de alcoxicarbonilare la amine şi aminoacizi cu carbonaţi micşti de N-ftalimidil, Rev. Chim. (Buc.), 2007, 58(7), 659-663
V. Badea*, M.-D. Şofei, M. M. Venter, V. N. Bercean, Regioselective alkylation of 1H-7- ethoxycarbonyl-6-methyl-3-phenyl-pyrazolo[5,1-c][1,2,4]triazole and 1H-6-methyl-3-phenyl-pyrazolo[5,1-c][1,2,4]triazole, Tetrahedron, 2007, 63, 1467-1473
A. X. Lupea, I. Popescu, C. Tărăbăşanu, I. Ienaşcu, V. Badea, The synthesis and characterization of some ortho-substituted phenoxy alkanoic acids and their derivatives, Journal of the Serbian Chemical Society, 2006, 71(12), 1247–1261
L.V. Costea, V.N. Bercean, V. Badea, K. Gerdes, U. Jordis, Synthesis and electrochemical behavior of some 1H-3-methyl-4-ethoxycarbonyl-5-(benzylidenehydrazino) pyrazoles, Monatshefte für Chemie, 2006, 137, 737-744
L. Costea, V. N. Bercean, V. Badea, A.Chiriac, Reactions of 1H-3-methyl-4-ethoxycarbonyl-5-bezylidene hydrazino-pyrazole in nonaqueous media under conditions of undivided and divided cells electrolysis, Rev. Chim. (Buc.), 2006, 57(8), 834-837
M. Simon, A. Micle, M. C. Turoczi, V. Badea, C. Csunderlik, Bis(o-nitrophenyl)carbonate, a valid alternative reagent to phosgene in symmetrical N,N’-dyaril ureas synthesis, Rev. Chim. (Buc.), 2006, 57(4), 383-386
V. N. Bercean, V. Badea, M.-D. Şofei, D. Mitroi, C. Csunderlik, Nitrosation of pyrazolo[5,1-c] [1,2,4]triazoles, Rev. Chim. (Buc.), 2006, 57(3), 326-328
L. Costea, V. N. Bercean, V. Badea, A. Chiriac, Synthesis and electrochemical characteristics of dyes based upon 1H-3-phenyl-6-methyl-7-aril-azopyrazolo [5,1-c][1,2,4] triazole, Rev. Chim. (Buc.), 2006, 57(1), 71-74
A. Andrei, V. Badea, R. Mrejeru, R. Nuţiu, Hidrazone ale 2-hidrazinopirimidinei, Rev. Chim (Buc.),  2005, 56(4), 418-420
V.-N. Bercean, V. Badea, M. Venter, M. Medeleanu, C. Csunderlik, Structure of the acylation products from 3,6-disubstituted and 3,6,7-trisubstituted 1H-pyrazolo[5,1-c] [1,2,4] triazoles, ARKIVOC 2005 (x), 130-138
V. N. Bercean, V. Badea, M. Ilici, I. Neda, C. Csunderlik, Sinteza şi caracterizarea 1H-3-metil-4-etoxicarbonil-5-arilidenhidrazino-pirazolilor, intermediari în sinteza 1H-3-aril-6-metil-pirazolo[5,1-c] [1,2,4]-triazolilor, Rev. Chim.(Buc.), 2005, 56(3), 297-300
V. N. Bercean, V. Badea, O. Cârjila, C. Csunderlik, 1H-3-Metil-4-etoxicarbonil-5-aroil hidrazino-pirazoli intermediari în sinteza 1H-3-aril-6-metil-7-etoxicarb onil-pirazolo[5,1-c] [1,2,4] triazolilor, Rev. Chim (Buc.), 2004, 55(12), 1018-1021
V. Bercean, V. Badea, E. Sisu, L. Bindilă, C. Csunderlick, Simplified method for the preparation of 3-aryl-5-mercapto-1,2,4-triazoles, Rev. Chim. (Buc.), 2003, 54(4), 368-369
V. Bercean, V. Badea, R. Iorga, C. Csunderlik, Coupling of 1H-3-phenyl-6-methyl-pyrazolo-[3,2-c]-s-triazole with phenyldiazonium chloride, Rev.  Chim. (Buc.), 2003, 54(6), 533-534
V.N. Bercean, V. Badea,  R. Nuţiu, Azoic derivatives from 1H-3-methyl-4-ethoxycarbonyl-5-amino-pyrazole and phenols, Rev.  Chim. (Buc.), 2002, 53(7), 508-511
E. Făgădar-Cosma, D. Rotaru, P. Soimu, L. Ostopovici, Gh. Făgădar-Cosma, V. Badea, C. Csunderlik, Study of the chemical properties of alkyl and arylchlorophosphines. I. New  heterocyclic compounds of phosphorus(V)-synthesis and characterization, Rev.  Chim. (Buc.), 2002, 53(7), 504-507C. Csunderlik, V. Bercean, F. Peter, V. Badea, Facile bromination of the benzene ring during the cyclisation of the 1H-3-methyl-4-ethoxycarbonyl-5-arylidenehydrazono-pyrazoles to the 3-substituted-aryl-1H-6-methyl-7-ethoxycarbonyl-pyrazolo[3,2-c]-s-triazoles, ARKIVOC,  2002, (ii), 133-141