1. Copper(I)-Catalyzed Conjugate Addition of Vinylzirconocene and Vinylzincate Reagents.

2. Hydrozirconation/Transmetalation with Zinc
Negishi [ J. Am. Chem. Soc. 1978, 100, ]
Wipf [ Tetrahedron Lett. 1994, 35, ]
Walsh [ J. Am. Chem. Soc. 2004, 126, ]

3. First Attempts 1,2-addition product is circumvented.
1,4-addition rate of
vinylzincate is faster
than vinylzirconocene.

4. Copper(I) Iodide Dimethyl Sulfide Catalyzed
1,4-Addition of Mixed Alkenyl-Alkylzincate Reagents

5. 1,4-Addition of Alkenyl Groups to α,β-Unsaturated Imides

6. Improving the Mixed Zincate Methodology