Regioselective Synthesis of Highly Functionalized 3-Spiropyrrolidine/pyrrolizidine Oxindoles and Acenaphthenones via One-Pot Four-Component [3+2] Cycloaddition

[摘要]：A facile and efficient entry into highly functionalized 3-spiropyrrolidine oxindoles and 3-spiropyrrolizidine oxindoles, as well as to 3-spiropyrrolidine acenaphthenones via one-pot four-component reactions of 3-cyanoacetylindoles, aldehydes, isatin/acenaphthylene-1,2-dione and amino acid has been developed. Particularly valuable features of this method include high yields of products, broad substrate scope and a straightforward procedure.

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