Functional radicals are among the most versatile and reactive intermediates in chemistry, offering unique opportunities to build molecular architectures and access reactivity patterns that are often difficult to achieve through conventional synthetic methods. Yet, their exceptional reactivity presents a fundamental challenge, including but not limited to how we can control the generation, stability, reactivity, and selectivity of radical species to achieve predictable bond formation. Addressing these questions is central to unlocking the full potential of functional radicals and translating their distinctive reactivity into new synthetic opportunities. The Katayev Research Group integrates photocatalysis, electrochemical

synthesis, mechanochemistry, and synergistic catalytic strategies to develop innovative synthetic methodologies that address fundamental challenges in modern organic synthesis. Particular emphasis is placed on harnessing the reactivity of carbon-, nitrogen-, oxygen-, and halogen-centered radicals to enable selective C–H functionalization and the formation of valuable chemical bonds with high precision and efficiency. By exploiting unconventional reaction pathways and designing new catalytic concepts, we seek to expand the synthetic capabilities of small functional radicals for the preparation of complex molecules, pharmaceutical compounds, biologically relevant architectures, and advanced functional materials.