Results for hetero aromatic molecules translation from English to Polish

they are used for the calculation of log pow for aromatic molecules or substructures.
są one stosowane dla obliczeń log pow cząsteczek aromatycznych lub podstruktur.

the addition of 5 % polyvinylpyrrolidone-40000 mwt (pvp-40) is recommended when performing the direct pcr test to reduce the incidence of amplification inhibition by aromatic molecules in the extract.
zaleca się dodatek 5 % poliwinylopirolidonu - o masie cząsteczkowej 40 000 (pvp-40), podczas wykonywania bezpośredniego badania pcr, w celu zmniejszenia inhibicji namnażania przez cząsteczki aromatyczne obecne w ekstrakcie.

thiophenes furans and pyridines are in general the most readily available of the various hetero-aromatic systems and therefore we have carried out a great deal of metallation and derivatization reactions with these compounds. furan and thiophene are cheap starting compounds and the stability of their easily obtainable 2-lithio derivatives permits reactions with a variety of "electrophilic" reagents. hetero-aromatics with two or more hetero atoms (e.g. thiazoles, pyrazoles, oxazoles) are less readily available, and some of their metal derivatives have a low thermo stability (cyclofragmentations). for these reasons their metallation and functionalization reactions have been studied less extensively [1]. the majority of the metallated hetero-aromatic compounds are obtained by direct metallation [1,2,5]. the "hetero-atom effect" (inductive, coordinative and polarizability influence) in most cases directs the metallation to the position 0(- to the hetero atom and gives rise to an easier deprotonation compared with that of benzene [1]. in some cases, bromine-lithium exchange offers the possibility of introducing the metal in a position that is not accessible by direct deprotonation. in incidental cases, grignard compounds have been prepared from halogenated hetero aromates and magnesium.
siłą napędową dla wymiany br/li jest prawdopodobnie znacznie słabszy, w przypadku phenyllithium, ponieważ różnica w wytrzymałości bazowej phli i 3-thienyllithium nie jest duża. z drugiej strony kwasowość 2-proton jest wystarczające do szybko deprotonowanie przez phli.