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. 2012 Dec 12;134(49):19985-8.
doi: 10.1021/ja309409e. Epub 2012 Nov 28.

C-C bond formation via copper-catalyzed conjugate addition reactions to enones in water at room temperature

Bruce H Lipshutz  1 , Shenlin Huang, Wendy Wen Yi Leong, Guofu Zhong, Nicholas A Isley
Affiliations

C-C bond formation via copper-catalyzed conjugate addition reactions to enones in water at room temperature

Bruce H Lipshutz et al. J Am Chem Soc. .

Abstract

Conjugate addition reactions to enones can now be done in water at room temperature with in situ generated organocopper reagents. Mixing an enone, zinc powder, TMEDA, and an alkyl halide in a micellar environemnt containing catalytic amounts of Cu(I), Ag(I), and Au(III) leads to 1,4-adducts in good isolated yields: no organometallic precursor need be formed.

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Figures

Figure 1
Figure 1
Structure for polyoxyethanyl-α-tocopheryl succinate (TPGS-750-M).
Figure 2
Figure 2
Distinctions between intermediates in Pd- vs. Cu-catalyzed reactions.
Scheme 1
Scheme 1. Comparison approaches: traditional vs. micellar catalysis
Scheme 2
Scheme 2. In-Flask Recycling of TPGS-750-M and AuCl3
Scheme 3
Scheme 3. The Coinage Metal Triad as Catalysts
See this image and copyright information in PMC

References

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