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ChemInform Abstract: Diastereo‐ and Enantioselective Synthesis of Spiro‐Pyrrolidine‐Pyrazolones by Squaramide‐Catalyzed Cascade Aza‐Michael/Michael Reactions. Issue 40 (September 2016)
Record Type:
Journal Article
Title:
ChemInform Abstract: Diastereo‐ and Enantioselective Synthesis of Spiro‐Pyrrolidine‐Pyrazolones by Squaramide‐Catalyzed Cascade Aza‐Michael/Michael Reactions. Issue 40 (September 2016)
Main Title:
ChemInform Abstract: Diastereo‐ and Enantioselective Synthesis of Spiro‐Pyrrolidine‐Pyrazolones by Squaramide‐Catalyzed Cascade Aza‐Michael/Michael Reactions.
Abstract: A series of novel spiropyrrolidine‐pyrazolones having three contiguous stereocenters are synthesized by cyclocondensation of arylidene pyrazolones (I) with tosylaminomethyl enones (II) in the presence of a squaramide catalyst.