N-substituted granatanine-3-spiro-5′-hydantoins as zwitterions. Potentiometric determination of the pK1and pK2values for the conjugate acids

Autor:	Gregorio G. Trigo, Emilia Santos, Isabel Rosillo, Carmen Avendaño
Rok vydání:	1982
Předmět:	chemistry.chemical_compound chemistry Zwitterion Potentiometric titration Organic chemistry Medicinal chemistry Conjugate
Zdroj:	J. Chem. Soc., Perkin Trans. 2. :389-390
ISSN:	1364-5471 0300-9580
DOI:	10.1039/p29820000389
Popis:	Remarkable pK1, and pK2 values for N-substituted granataninespirohydantoins which have the zwitterion structure (II) have been found by potentiometry. Previously proposed conformations for the conjugate acids (H2Z+) and the zwitterion forms (HZ+–) may explain these values.
Databáze:	OpenAIRE
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