Tetrahedron

Stereochemical studies of 2-hydroxychromanones by 1H NMR spectroscopy

J Borbély, V Szabó, PL Sohár

Index: Szabo, Vince; Borbely, Janos; Theisz, Edit; Borda, Jeno; Janzso, Geza Tetrahedron, 1984 , vol. 40, # 2 p. 413 - 417

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Citation Number: 10

Abstract

2-Hydroxychromanones (2a–2f) were synthesized by ring closing of 2- hydroxyacetophenones (1a, b) and 2-hyroxypropiophenones (1c–1f). In the case of 2- hydroxy-3-methyl-chromanones (2c–2f) a mixture of cis and trans isomers was obtained.

Examination of the ring-chain isomerism of 2-hydroxy-chromanones with 1H NMR spectroscopy

[Szabo, Vince; Borbely, Janos; Theisz, Edit; Janzso, Geza Tetrahedron Letters, 1982 , vol. 23, # 50 p. 5347 - 5350]

Reaction of chromones with hydroxylamine in anhydrous methanol: A novel route for the preparation of chromone oximes

[Szabo, Vince; Borbely, Janos; Theisz, Edit; Nagy, Sandor Tetrahedron, 1986 , vol. 42, # 15 p. 4215 - 4222]