Abstract
Biaryls are a key structural motif in compounds with various applications, ranging from pharmaceuticals to material science, including ligands for organic synthesis. Given the growing concern about the use of transition metals in organic synthesis in terms of reaction condition mildness, substituents tolerance, reagents costs and toxicity, and purification of the products from metal traces, several alternatives have been developed to overcome the limitations of metal-catalyzed biaryls synthesis. Herein, we review the transition metal-free approaches to biaryls, which can be divided into metal-free crosscoupling of aromatics and metal-free benzannulation of aryl-substituted chains, as both fields have shown an impressive growth in recent years.
Keywords: Biaryls, metal-free, cross-coupling, diels-alder, annulation, oxidative coupling.
Graphical Abstract
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
Chemistry and Biology of Carbohydrates
Carbohydrates are one of the most abundant natural products and are considered to be extremely important biomolecules for their ever-increasing impact on chemistry and biology. Their role in several important biological processes, notably energy storage, transport, modulation of protein function, intercellular adhesion, malignant transformation, signal transduction, viral, and bacterial cell ...read more
Electrochemical C-X bond formation
Conventional methods for carrying out carbon–X bond formation are typically conducted at harsh reaction conditions, and rely on expensive catalysts as well as the use of stoichiometric, and perhaps toxic, oxidants. In this regard, electrochemical synthesis has recently been recognized as a sustainable and scalable strategy for the construction of ...read more
From Lab Bench to Algorithm: The Future of Organic Chemistry Powered by AI
Organic chemistry, with its intricate dance of molecules and reactions, is undergoing a transformation fuelled by the power of Artificial Intelligence (AI) and Machine Learning (ML). The integration of AI/ML with Organic Chemistry is revolutionizing the field by enhancing the efficiency and accuracy of chemical research and development. These technologies ...read more
Related Books
Basics of Organic Chemistry: A Textbook for Undergraduate Students
Advances in Organic Synthesis
The Synthetic Methods, Structures, and Properties of the Ca-C σ Bond Organocalcium Containing Compounds
Advances in Organic Synthesis
Chemistry of Bipyrazoles: Synthesis and Applications
Advances in Organic Synthesis
Advanced Nanocatalysis for Organic Synthesis and Electroanalysis
Advances in Organic Synthesis
Advances in Organic Synthesis
80
2