A facile and efficient synthesis of highly functionalised 3,3′-dispiropyrrolidine- and 3,3′-dispiropyrrolizidine bisoxindoles via [3+2] cycloaddition |
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| Authors: | Ponnusamy Shanmugam Baby Viswambharan Kodirajan Selvakumar Suchithra Madhavan |
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| Institution: | Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695 019, Kerala, India |
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| Abstract: | The 3+2] cycloaddition reaction of azomethine ylides with isomerised Morita-Baylis-Hillman adducts, both dipoles and dipolarophiles are derived from isatin, afforded highly functionalised 3,3′-dispiro pyrrolidine- and 3,3′-dispiropyrrolizidine bisoxindoles in high yields. |
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| Keywords: | Isatin Azomethine ylides Morita-Baylis-Hillman adduct Dispiropyrrolidine oxindoles Bispiropyrrolizidine oxindoles Cycloaddition |
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