Synlett 2016; 27(06): 814-820
DOI: 10.1055/s-0035-1561293
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© Georg Thieme Verlag Stuttgart · New York

Catalytically Active Nickel–Nickel Bonds Using Redox-Active Ligands

Christopher Uyeda*, Talia J. Steiman, Sudipta Pal
  • Department of Chemistry, Purdue University, 560 Oval Dr., West Lafayette, IN, 47907, USA   Email: cuyeda@purdue.edu
Further Information

Publication History

Received: 04 November 2015

Accepted after revision: 23 November 2015

Publication Date:
11 January 2016 (eFirst)

Abstract

Advances in catalytic methodology are limited by the available tools for systematically optimizing catalyst structure. For molecular transition-metal catalysts, this optimization process typically involves two principle parameters: the identity of the active metal center and the environment presented by supporting ligands. In this Account, we highlight our group’s efforts to exploit nuclearity as a parameter in catalyst design. We recently reported a binucleating naphthyridine–diimine (NDI) ligand that supports coordinatively unsaturated nickel–nickel bonds across a broad range of formal oxidation states. Taking advantage of ligand-centered redox activity, these dinickel complexes function as robust platforms for catalytic transformations, including hydrosilylation and alkyne cyclotrimerization reactions. Our results collectively demonstrate that nuclearity effects provide a complementary means of modulating the activity and selectivity of transition metal catalysts.

1 Introduction

2 Group 10 Metal–Metal Bonds in Catalysis

3 Dinuclear Nickel Complexes Supported by Redox-Active Ligands

4 Multielectron Redox Transformations at Metal–Metal Bonds

5 Dinuclear Silane Activation and Catalytic Hydrosilylations

6 Selective Alkyne Cyclotrimerization

7 Conclusions