Synthesis of Spiro[Indene-2,2′-Naphthalene]-4′-Carbonitriles and Spiro[Naphthalene-2,5′-Pyrimidine]-4-carbonitriles via One-pot Three Component Reaction Using Task Specific Ionic Liquid
A novel and efficient methodology has been developed for synthesizing indane-1,3-dione and pyrimidine based spirocyclic compounds. The synthesis has been achieved via multicomponent reaction of indane-1,3-dione/1.3-dimethylbarbituric acid, variously substituted aromatic aldehydes and cyclohexylidene malononitrile in presence of catalytic amount of TSIL [bmim]OH. Short reaction time, high yields and use of non-chromatographic purification techniques are some of the advantages of this methodology.
KeywordsSpiro compounds Ionic liquid MCRs Vinylogous Michael addition Knoevenagal condensation
G.K. and P.S. thank CSIR, New Delhi and UGC, New Delhi, respectively, for providing financial assistance in form of junior and senior research fellowship.
Conflicts of Interest
Authors declare no conflict of interest.
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