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Chemistry of naphthazarin derivatives. 8. Determination of structures of substituted 2-hydroxy-6(7)-methoxynaphthazarins and 7(8)-hydroxypyranonaphthazarins by IR spectroscopy

โœ Scribed by V. P. Glazunov; A. Ya. Tchizhova; O. P. Shestak; G. I. Sopel"nyak; V. Ph. Anufriev

Book ID
110275035
Publisher
Springer
Year
2001
Tongue
English
Weight
271 KB
Volume
50
Category
Article
ISSN
1573-9171

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โœ Larry D. Bratton; Paul C. Unangst; J. Ronald Rubin; Bharat K. Trivedi ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 117 KB

## Abstract The preparation of a variety of derivatives of 2โ€oxaโ€1,3,4,10โ€tetraazacyclopenta[__b__]fluorenโ€9โ€one 1 is described. A series of substituted indanโ€1โ€ones were prepared and oxidized with __N__โ€bromosuccinimide and dimethyl sulfoxide to the corresponding ninhydrin derivatives. Cyclization