“…In order to access those versatile motifs, there is a need of synthetic strategy for the development of highly efficient methodology. So far, various literature has been documented for the synthesis of spirocycles compounds such as benzofuran spirocyclic (Li et al, 2013(Li et al, , 2014, Spirooxindole (Bencivenni et al, 2009;Chen et al, 2009;Wei and Gong, 2010;Jiang et al, 2010;Chen et al, 2011), spiro cyclohexanone rhodanines (Wu et al, 2012a,b) and spirocyclic azlactones (Weber et al, 2013). Over the last few decades, organocatalysis double Michael reaction of diversified donors with dienones has also been reported for the synthesis of several spirocyclic compounds (Xu et al, 2013;Weber et al, 2013;Fusco and Lattanzi, 2011;Wang et al, 2011;Li et al, 2011;Wu et al, 2011Wu et al, , 2012a.…”