One‐Pot Triple and Mixed Double Michael Addition of Activated Alkenes to 2‐Oxindole and 7‐Aza‐2‐Oxindole: Synthesis of C‐3/N‐Functionalized Carbon Rich 2‐Oxindole and 7‐Aza‐2‐Oxindole Derivatives
Raman Kavitha Preethi,
Sathananthan Kannadasan,
Ponnusamy Shanmugam
Abstract:A simple, efficient, and atom‐economical, one‐pot triple Michael Addition of activated alkenes to 2‐oxindole, 7‐aza‐2‐ indolone, and N‐methyl‐5‐bromo‐7‐aza‐2‐indolone has been developed. Significantly, multifunctionalities have also been achieved via one‐pot mixed Michael addition using the equimolar amount of two different activated alkenes. The reaction provided C‐3 and N‐functionalized carbon‐rich 7‐aza‐2‐oxindole derivatives. The scope of the reaction using diverse activated alkenes has been tested to prov… Show more
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