Abstract
Amberlyst-15 catalyzed condensation of 2-hydroxychalcones and 4,4-dimethylcyclohexane-1,3-dione in refluxing toluene was found to show regioselectivity resulting in (6R*,12S*)-2,2-dimethyl-6-phenyl-2,3,4,12-tetrahydro-1H-6,12-methanodibenzo[d,g][1,3]dioxocin-1-ones as the major product.
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Acknowledgements
Financial support and spectral facilities from the PURSE and FIST programs of the DST and CAS program of the UGC, New Delhi to the Department of Chemistry, Jadavpur University are gratefully acknowledged. The UPE-II program of the UGC is also thanked for financial assistance. N.S., S.M., C.G. and R.M. are thankful to the UGC, New Delhi for their Research Fellowships.
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Sepay, N., Mallik, S., Guha, C. et al. On the regioselectivity of the amberlyst-15 catalyzed condensation of 2-hydroxychalcones and 4,4-dimethylcyclohexane-1,3-dione. Monatsh Chem 149, 2113–2121 (2018). https://doi.org/10.1007/s00706-018-2258-z
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DOI: https://doi.org/10.1007/s00706-018-2258-z