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Lanthanide ion-induced hydrolyses of alkyl esters and amides of α-amino acidsFor a preliminary communication on the lanthanide-induced hydrolysis of peptides, see Ref. 1. (1998)

Takarada, Tohru ; Takahashi, Rei ; Yashiro, Morio ; [weitere]

Chichester : Wiley-Blackwell

Journal of Physical Organic Chemistry 11 (1998), S. 41-46

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Details

ISSN: 0894-3230

Schlagwort(e): lanthanide ion ; hydrolysis ; α-amino acid esters ; α-amino acid amides ; Chemistry ; Theoretical, Physical and Computational Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Notizen: Lanthanide ion-induced hydrolyses of methyl esters, ethyl esters, and amides of α-amino acids were systematically studied. In the hydrolysis of the alkyl esters, all the lanthanide ions are effective and the catalytic activities decrease in the order Ce(III), Nd(III) 〉 Sm(III) 〉 Eu(III) 〉 Gd(III), Ce(IV) 〉 Pr(III) 〉 Dy(III), Tb(III), Er(III), Ho(III), Tm(III) 〉 La(III), Lu(III), Yb(III). For the hydrolysis of the amides, however, the Ce(IV) ion is overwhelmingly more active than other lanthanide(III) and non-lanthanide ions. The results are interpreted in terms of the difference in the rate-limiting step for these two reactions. © 1998 John Wiley & Sons, Ltd.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

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