Abstract
AbstractA simple and convenient protocol has been demonstrated for the construction of spiro[chroman‐3,2′‐indanedione] via Oxa‐Michael/Michael cascade reaction sequence using 2‐arylidene‐1,3‐indanedione and (E)‐2‐(2‐nitrovinyl)phenol. This [4+2] cyclisation protocol results in the generation of two stereocentres along with an all carbon quaternary centre in good to high chemical yields of upto 93 %. A triple cascade reaction approach was carried out for the construction of spiro[chroman‐3,2′‐indanedione] using [1+1+4] cyclisation protocol.
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