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A novel (pentamethylcyclopenta-1,3-dienyl)iridium(III)-catalyzed direct C–H functionalization of triarylphosphine oxides with diazo dicarbonyl compounds through carbene insertion has been developed. This strategy provides a simple and efficient route to the construction of α-arylated 1,3-dicarbonyl compounds, which are important building blocks in pharmaceutical chemistry. [ABSTRACT FROM AUTHOR]

Highly selective arylation catalyzed by palladium and directed by the acetamino group provides an efficient and practical protocol for constructing unique biaryl scaffolds, which could be further transformed into different structural units found in a range of natural products. 1 Introduction 2 Highly Regioselective Halogenation 3 Highly Regioselective Arylation 3.1 With Arylboronic Acids 3.2 With Trialkoxyarylsilanes 3.3 With Simple Arenes 3.4 Further Transformations 4 Conclusion [ABSTRACT FROM AUTHOR]