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Le rôle du catalyseur dans la cyclisation des esters glutamiques (1963)

Hubert, A. J. ; Buyle, R. ; Hargitay, B.

New York, NY : Wiley-Blackwell

Helvetica Chimica Acta 46 (1963), S. 1429-1445

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Details

ISSN: 0018-019X

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Lactam formation from glutamic acid diesters is subject to catalysis by carbo-xylic acids in general and to base catalysis in alcohols. Kinetic measurements prove that catalysis by carboxylic acids is based on a push-pull mechanism provoked by the undissociated acid molecule and that the base catalysed reaction is due to the alcoholate anion and is therefore absent in aprotic solvents. Carboxylic acids exhibit catalysis as well as - at higher concentration - inhibition.

Additional Material: 11 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/hlca.19630460439

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