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Clujul Medical - Iuliu Haţieganu

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<strong>Clujul</strong> <strong>Medical</strong> 2006 vol. LXXX - nr. 1<br />

10. AVRIGEANU V.: Cercetări spectrale în clasa tereftaldiamidelor.V. Studiul<br />

spectral RMN al unor tereftaldiamide cu rest de amină secundară ciclică, <strong>Clujul</strong><br />

<strong>Medical</strong>, 2005, LXXVIII(1), 170-174.<br />

11. AVRIGEANU V., CULEA M.: Cercetări spectrale în clasa tereftaldiamidelor. II.<br />

Studiul spectrelor de masă ale unor tereftaldiamide disubstituie la azot, <strong>Clujul</strong><br />

<strong>Medical</strong>, 2002, LXXV(3), 517-521.<br />

12. BOJITA M., ROMAN L., SANDULESCU R., OPREAN R.: Analiza şi controlul<br />

medicamentelor. Vol. 2. Metode instrumentale în analiza şi controlul<br />

medicamentelor, Editura Intelcredo Deva, 2003, 445-488.<br />

13. OPREAN I.: Spectrometria de masă a compuşilor organici, Editura Dacia, Cluj-<br />

Napoca, 1974, 45-220.<br />

14. BANCIU M.D., SARAMET I.: Hidrocarburi. Partea II. Metode spectrometrice<br />

utilizate în caracterizarea compuşilor organici, Editura Tehnoplast Company,<br />

Bucureşti, 1997, 503-513.<br />

Mass spectrometry study of some terephtaldiamides with<br />

acyclic and cyclic aminic rests<br />

VERONICA AVRIGEANU, SILVIA IMRE, ELEONORA MIRCIA,<br />

Summary<br />

By condensation of terephtaloyldichloride with secondary acyclic<br />

(diethylamine, diizopropylamine, diisobutylamine, N-benzylmethylamine, Nphenylmethylamine,<br />

diphenylamine) and cyclic (pyrolidine, piperidine, 4methylpiperidine,<br />

hexamethylenimine, morpholine) amines, new terephtaldiamides with<br />

potential analgetical action were obtained. The structures of the compounds were<br />

studied and confirmed by mass spectrometry. The molecular ion with high relative<br />

abundance was present in spectra and, in some cases, was the basic ion. A fragment<br />

with m/z 77 suggested the cleavage of σ bound between the benzene ring and the<br />

carbonyl groups. The presence of the fragmentation ions with m/z 56, 42 and 28 is<br />

related to heterocyclic or diethylamine, diisopropylamine and diisobutylamine rests.<br />

The molecular structure, the strength of the chemical bounds, and the fragmentation<br />

pathways of the obtained terephtaldiamides were finally assessed.<br />

Keywords: terephtaldiamides, mass spectrometry<br />

189

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