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. 2020 Aug 7;10(15):8237-8246.
doi: 10.1021/acscatal.0c01842. Epub 2020 Jun 24.

Nickel-Catalyzed Enantioselective Reductive Cross-Coupling Reactions

Affiliations

Nickel-Catalyzed Enantioselective Reductive Cross-Coupling Reactions

Kelsey E Poremba et al. ACS Catal. .

Abstract

Nickel-catalyzed reductive cross-coupling reactions have emerged as powerful methods to join two electrophiles. These reactions have proven particularly useful for the coupling of sec-alkyl electrophiles to form stereogenic centers; however, the development of enantioselective variants remains challenging. In this Perspective, we summarize the progress that has been made toward Ni-catalyzed enantioselective reductive cross-coupling reactions.

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Figures

Figure 1.
Figure 1.
Proposed mechanistic hypotheses.
Scheme 1.
Scheme 1.
Seminal reports of Ni-mediated reductive homocoupling.
Scheme 2.
Scheme 2.
First reports of Ni-catalyzed cross-coupling of C(sp2) and C(sp3) electrophiles with metal reductants.
Scheme 3.
Scheme 3.
First report of enantioconvergent RCC.
Scheme 4.
Scheme 4.
Enantioconvergent RCCs of alkenyl bromides.
Scheme 5.
Scheme 5.
Enantioconvergent reductive decarboxylative cross-coupling.
Scheme 6.
Scheme 6.
Enantioconvergent RCC of α-chloronitriles.
Scheme 7.
Scheme 7.
Enantioconvergent RCCs with a novel BiOX ligand.
Scheme 8.
Scheme 8.
Enantioconvergent RCC with Ni/Ti co-catalysis.
Scheme 9.
Scheme 9.
Enantioselective RCCs of olefins and C(sp2) electrophiles.
Scheme 10.
Scheme 10.
Enantioselective RCCs of olefins and C(sp3) electrophiles.
Scheme 11.
Scheme 11.
Enantioselective reductive intermolecular cross-coupling of olefins.

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