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Synthesis and Spectroscopic Studies of Bis-g Pyrones

Journal of Scientific and Technical Research

Volume 9 Issue 2

Published: 2019
Author(s) Name: Dhanashri Panchbhai | Author(s) Affiliation: Department of Chemistry, Anand Niketan College, Warora, Maharashtra, India
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The Baker-Venkataramn transformation using NaOH in dimethylsulphoxide (DMSO) 77 have been employed for the coversions of ester (o-aroyloxy/heteroaroyloxyacetophenones) into the corresponding bis ß-diketones. A novel class of 2, 8-bis(aryl/heteroaryl) pyrano [3, 2-?] chromene-4, 6-diones have been synthesized. Bis- ß diketones obtained undergoes cyclisation to achieve 2, 8-bis(aryl/heteroaryl) pyrano [3, 2-?] chromene-4, 6-diones with impressive yields. Reaction mechanism for their formation have been elucidated. 4, 6- Diacetylresorcinol was obtained by the acylation of resorcinol. The structures of these compounds were confirmed by IR, NMR and Mass spectral studies

Keywords: 4, 6-Diacetyl resorcinol, Bis ß-diketones, Pyrones, Spectral analysis.

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