Synthesis and stereostructure of some 5, 5′-disubstituted 3-acetyl-2, 2′-BI-2H-1, 3, 4-oxa (thia) diazolines

L Somogyi, M Czugler, P Sohár

Index: Somogyi, Laszlo; Czugler, Matyas; Sohar, Pal Tetrahedron, 1992 , vol. 48, # 42 p. 9355 - 9362

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Citation Number: 13

Abstract

The synthesis of some (methyl) glyoxal 1, 2-bis (acylhydrazones)(1, 3–6) and their cyclization into the title compounds (7–10) under acetylating conditions are described. The stereostructures of the new bi-heterocyclic diastereomers were studied by 1H-and 13C-NMR measurements as well as by X-ray analysis.