Early Transition Metal Zr, Hf Catalyzed Dialkylzinc Additions

3 Early Transition Metal (Zr, Hf)-Catalyzed Dialkylzinc Additions 

Hoveyda and Snapper reported an alternative approach to the preparation of 

The chiral catalyst complex is believed to increase the electrophilicity of the imine 

To extend this methodology to N aryl imines derived from alkyl substituted aldehydes, they developed a three component approach involving in situ imine formation from an appropriate aldehyde and o anisidine followed by the alkylation 

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