Spirobicyclic and Tetracyclic Pyrazolidinones: Syntheses and Properties
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DOI: 10.1002/ejoc.201900989
Abstract: The stereoselective syntheses of spirobicyclic and tetracyclic pyrazolidinones are reported based on a (3+2) annu- lation between hydrazones and α-oxoketenes. Some of these conformationally constrained molecules were resolved as enantiopure materials by HPLC techniques and… read more here.
Keywords: pyrazolidinones syntheses; spirobicyclic tetracyclic; syntheses properties; chemistry ... See more keywords