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Study of Preparation and Properties of Imidazolium Betaines

V. Šunjić ; Research-Development Institute, KRKA, Pharmaceutical and Chemical Works, Novo Mesto, Yugoslavia
T. Fajdiga ; Research-Development Institute, KRKA, Pharmaceutical and Chemical Works, Novo Mesto, Yugoslavia
M. Slamnik ; Research-Development Institute, KRKA, Pharmaceutical and Chemical Works, Novo Mesto, Yugoslavia

Puni tekst: engleski, pdf (10 MB) str. 397-409 preuzimanja: 85* citiraj
APA 6th Edition
Šunjić, V., Fajdiga, T. i Slamnik, M. (1970). Study of Preparation and Properties of Imidazolium Betaines. Croatica Chemica Acta, 42 (3), 397-409. Preuzeto s https://hrcak.srce.hr/197529
MLA 8th Edition
Šunjić, V., et al. "Study of Preparation and Properties of Imidazolium Betaines." Croatica Chemica Acta, vol. 42, br. 3, 1970, str. 397-409. https://hrcak.srce.hr/197529. Citirano 29.03.2020.
Chicago 17th Edition
Šunjić, V., T. Fajdiga i M. Slamnik. "Study of Preparation and Properties of Imidazolium Betaines." Croatica Chemica Acta 42, br. 3 (1970): 397-409. https://hrcak.srce.hr/197529
Harvard
Šunjić, V., Fajdiga, T., i Slamnik, M. (1970). 'Study of Preparation and Properties of Imidazolium Betaines', Croatica Chemica Acta, 42(3), str. 397-409. Preuzeto s: https://hrcak.srce.hr/197529 (Datum pristupa: 29.03.2020.)
Vancouver
Šunjić V, Fajdiga T, Slamnik M. Study of Preparation and Properties of Imidazolium Betaines. Croatica Chemica Acta [Internet]. 1970 [pristupljeno 29.03.2020.];42(3):397-409. Dostupno na: https://hrcak.srce.hr/197529
IEEE
V. Šunjić, T. Fajdiga i M. Slamnik, "Study of Preparation and Properties of Imidazolium Betaines", Croatica Chemica Acta, vol.42, br. 3, str. 397-409, 1970. [Online]. Dostupno na: https://hrcak.srce.hr/197529. [Citirano: 29.03.2020.]

Sažetak
To investigate the posibility for the preparation of 1,3-dicarboxyalkyl(
benz)imidazolium betaines a number of monosubstituted
1-carboxyalkyl(benz)imidazoles has been prepared (I-X)
and their basic pKa value determined. The betaines (XI~XIV)
can be prepared only from the imidazole derivatives which had
basic (N3) pKa values above 3--4 pKa units. !-Substituted benzimidazoles decomposed under reaction conditions employed ·for
quaternization, yielding N,N'-dicarboxyalkyl o-phenylenediamines.
Dimethylformamide when used as the solvent under highly basic
reaction conditions reacted with halogen carboxylic acid.s giving
· rise to the formation · of betaines of dimethyl-dicarboxyalkyl
amines (XV, XVI) and hydrochlorides of dimethyl-carboxyalkyl
amines (XVII, XVIII), respectively.
The reaction course of 1,3-disubstitution is briefly discussed,
as well as some chemical and physical properties of the betaines
are described.

Hrčak ID: 197529

URI
https://hrcak.srce.hr/197529

Posjeta: 116 *