No 4, Avril 2006

Tome 51, No 4, Avril 2006

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1. Professor Alexandru T. Balaban’s 75th anniversary

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1.-bis Addendum to Professor Balaban’s List of Publications

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2. Horia PETRIDE, Oana COSTAN, Cristina FLOREA and Silvia UDREA

Competitive amide hydrolysis in mono- and diformylated ethylenediamines

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Key words: amides, hydrolysis

3. Florea DUMITRAŞCU, Constantin DRĂGHICI, Daniela VULUGA and Miron Teodor CĂPROIU

New pyrazoles by 1,3-dipolar cycloaddition reactions between sydnones and activated alkynes

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Key words: sydnones, pyrazoles, 1,3-dipolar cycloaddition, regioselectivity, NMR spectroscopy

4. Rodica Daniela BĂRĂŢOIU, Anca Elena BARBU, Lucia MUTIHAC, Miron Teodor CĂPROIU, Constantin DRĂGHICI, Radu SOCOTEANU and Titus CONSTANTINESCU

4-(3-(phtalhydrazide)azo)N-phenylaza-15-crown-5. Synthesis and properties

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Key words: luminol, N-phenylaza-15-crown-5, luminol derivative, 1H- and 13CNMR spectra at different temperatures, VIS spectra, pKa

5. Constantin I. CHIRIAC, Fulga TANASĂ and Marioara ONCIU

A new direct synthesis of aromatic amides in the presence of triethyl phosphite and 4- dimethylaminopyridine

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Key words: direct condensation; new activating system; TEP-4-DMAP; aromatic amides

6. Mariana Viorica BOGĂŢIAN, Demetra SIMION (NUŢĂ), Andreea Cristina CORBU, Călin DELEANU, Filip CHIRALEU, Maria MAGANU and Gheorghe BOGĂŢIAN

Synthesis membranes derived from pyridinium salts with long alkyl substituents having a terminal free amino group

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Key words: pyridinium salts, artificial membranes, CMC, DLS

7. Gianina DOBRESCU, Niculae I. IONESCU and Monica CĂLDĂRARU

The fractal dimension of oscillations in SnO2/humid O2 system

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Key words: fractal dimension, oscillations, SnO2

8. Maria MRACEC, Laura JUCHEL and Mircea MRACEC

QSAR analysis of a series of imidazole derivatives acting on the H3 receptor

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Key words: QSAR, MLR, MTD, histamine H3 receptor, imidazolic derivatives

9. Niculae ENE and Maria Ileana IONITA

Electrochemical behaviour of dimethyl ether in alkaline solutions at 298 K

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Key words: dimethyl ether, fuel cell, electrochemistry, voltammetry, electrochemical kinetics

10. Marieta BALCAN, Dan F. ANGHEL, Dan DONESCU and Anca-Nicoleta GĂLĂŢANU

Effect of the mobile phase composition on the retention behavior of polydisperse ethoxylated nonylphenols in reversed-phase high performance liquid chromatography

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Key words: nonionic surfactants, poly(ethylene oxide), RP-HPLC, retention behavior, mobile phase composition

11. Ana Maria TOADER, Daniela BULCU and Elena VOLANSCHI

Spectroelectrochemical study of the redox behaviour of questiomycin drugs in aprotic media

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Key words: 2-aminophenoxazin-3-one, 2-aminophenol, cyclic voltammetry, spectroelectrochemistry, MO calculations

12. Maria MRACEC, Laura JUCHEL and Mircea MRACEC

QSAR analysis of a series of imidazole derivatives acting on the H3 receptor

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Key words: QSAR, MLR, MTD, histamine H3 receptor, imidazolic derivatives

13. Niculae ENE and Maria Ileana IONITA

Electrochemical behaviour of dimethyl ether in alkaline solutions at 298 K

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Key words: dimethyl ether, fuel cell, electrochemistry, voltammetry, electrochemical kinetics

14. Marieta BALCAN, Dan F. ANGHEL, Dan DONESCU and Anca-Nicoleta GĂLĂŢANU

Effect of the mobile phase composition on the retention behavior of polydisperse ethoxylated nonylphenols in reversed-phase high performanceliquid chromatography

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Key words: nonionic surfactants, poly(ethylene oxide), RP-HPLC, retention behavior, mobile phase composition

15. Ana Maria TOADER, Daniela BULCU and Elena VOLANSCHI

Spectroelectrochemical study of the redox behaviour of questiomycin drugs in aprotic media

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Key words: 2-aminophenoxazin-3-one, 2-aminophenol, cyclic voltammetry, spectroelectrochemistry, MO calculations