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Paper | Special issue | Vol 33, No. 2, 1992, pp.657-671
Published online, 1st January, 1970
DOI: 10.3987/COM-91-S66
Reactions of Heterocyclic N-Oxides. The Synthesis of α-Heteroaryl-α-amino Acid Derivatives and Dipeptides

Berta Kotar Jordan, Branko Stanovnik,* and Miha Tisler

*Department of Chemistry, University of Ljubljana, Murnikova 6, P. O. Box537 61000 Ljubljana, Slovenia

Abstract

Heteroaryl substituted oxazolinylidene derivatives (3) and (4) were converted by opening of the oxazolinone ring under hydrolytic conditions, followed by decarboxylation into acylaminomethyl derivatives (5) and (6), with hydrazine hydrate into the corresponding hydrazides (7) , with liquid ammonia under pressure into amides (8), and with amino acids into dipeptides (9-11).