Substituted γ??lactones: On the structural elucidation of the reaction products from 4??aroyl??3??hydroxy??2 (5H)??furanones and 1, 2??diamines

…, A Amer, D Ho, R Palmer??Sungail

Index: Zimmer, Hans; Amer, Adel; Ho, Douglas; Palmer-Sungail, R. Journal of Heterocyclic Chemistry, 1991 , vol. 28, # 6 p. 1501 - 1510

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Citation Number: 9

Abstract

Abstract The reaction pathway of 4-aroyl-3-hydroxy-2 (5H)-furanones 1 with diamines depends on the nature of the amine as well as on the applied reaction conditions. Thus, the reaction of 1a-d with 5, 6-diamino-1, 3-dimethyluracil 5 led to the formation of two isomeric Schiff bases 7a-d and 8a-d. Conversely type 1 compounds reacted with 4, 5- diaminopyrimidine 9 or 2, 3-diaminopyridine 10 to form the mono acid-base adducts 11a ...