A Convenient Synthesis of Substituted Spiro[5.5]Undecanes Using Lewis Acid Catalysts
DOI:
https://doi.org/10.3329/dujs.v60i1.10349Keywords:
spiro[5.5]undecane, dimedone, trans, trans diarylideneacetone, Lewis acid catalyst, Michael reactionAbstract
A one-pot synthesis of 3, 3-Dimethyl-7, 11-diphenyl-spiro [5, 5] undecane-1, 5, 9-triones 4a-c has been achieved by the application of Michael reaction between dimedone (5,5-dimethylcyclohexane-1,3-dione) 1 and trans,trans diarylideneacetones [1,5-diaryl-1,4- pentadien-3-ones] 2a-c (a. Ar = C6H5-, b. Ar = 2-Cl-C6H4-, c. Ar = 2- CH3O- C6H4) using Lewis acid catalysts.
DOI: http://dx.doi.org/10.3329/dujs.v60i1.10349
Dhaka Univ. J. Sci. 60(1): 121-124 2012 (January)
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