Transformations of Acylation Products of Functionally 4-Substituted 2-Alkyl(aryl)-5-hydrazino-1,3-oxazoles into 1,3,4-Oxadiazole Derivatives View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2005-03

AUTHORS

A. V. Golovchenko, S. G. Pil’o, V. S. Brovarets, A. N. Chernega, B. S. Drach

ABSTRACT

Acylation products of 2-aryl-5-hydrazino-4-X-1,3-oxazoles [X = C(O)OAlk, P(O)(OAlk)2], when heated in acetic acid or ethanol, undergo recyclization and transform into the derivatives of 1,3,4-oxadiazol-2-ylglycine or its phosphonyl analog. A similar rearrangement also occurs in the reactions of 2-alkyl(aryl)-5-hydrazino-1,3-oxazole-4-carbonitriles with carboxylic acid chlorides in pyridine, but it is accompanied by additional cyclization involving the amide residue and nitrile group, yielding 2-(5-amino-1,3-oxazol-4-yl)-1,3,4-oxadiazole derivatives. More... »

PAGES

425-431

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11176-005-0244-8

DOI

http://dx.doi.org/10.1007/s11176-005-0244-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1034114375


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