Abstract
This account describes the discovery and development of efficient electron-withdrawing
group activated Hoveyda–Grubbs catalysts, including a nitro-substituted catalyst and
their applications in the syntheses of complex molecules.
1 Introduction
2 EWG-Activated Hoveyda–Grubbs Complexes
2.1 The Discovery and the Story Behind It
2.2 The Nitro-Substituted Hoveyda–Grubbs Catalyst
2.3 pH-Responsive Catalysts
2.4 Fine-Tuning of the EWG Fragment
3 Applications of the Nitro-Substituted Hoveyda–Grubbs Catalyst in the Preparation
of Compounds of Biological Relevance
3.1 Synthesis of BILN 2061
4 Concluding Remarks
Key words
alkenes - metathesis - catalysis - carbenes - ruthenium - organometallic reagents