4.4 Article

Highly regio- and stereoselective 1,3-dipolar cycloaddition of stabilised azomethine ylides to 3,3,3-trihalogeno-1-nitropropenes: synthesis of trihalomethylated spiro[indoline-3,2'-pyrrolidin]2-ones and spiro[indoline-3,3'-pyrrolizin]-2-ones

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