Abstract
Olefins are sparsely available but essential raw materials for the production of fuel, fine, specialty, and commodity chemicals. Dehydrogenation of abundant, unproductive, and inexpensive alkanes to valuable olefins is a challenging but synthetically valuable reaction. Among homogeneous and heterogeneous catalysts that are employed for alkane dehydrogenation (AD), the former are much more effective due to their higher selectivity and lower energy demand for the reaction. In particular, pincer-ligated catalytic systems (mostly with Ir) have proved to be highly efficient for such dehydrogenation reactions under homogeneous conditions. Catalytic dehydrogenations by other pincer–metal complexes based on Ru, Os, and Rh have also been explored, although exhibiting lower reactivity. In this chapter, the rich chemistry of pincer complexes in catalytic AD have been elucidated in detail with due emphasis to the recent activities.
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