New CarbonCarbon Coupling Reactions Based on Decarboxylation and Iron-Catalyzed CH Activation

This thesis presents the latest developments in new catalytic CC bond formation methods using easily accessible carboxylate salts through catalytic decarboxylation with good atom economy, and employing the sustainable element iron as the catalyst to directly activate CH bonds with high step efficiency. In this regard, it explores a mechanistic understanding of the newly discovered decarboxylative couplings and the catalytic reactivity of the iron catalyst with the help of density functional theory calculation. The thesis is divided into two parts, the first of which focuses on the development of a series of previously unexplored, inexpensive carboxylate salts as useful building blocks for the formation of various CC bonds to access valuable chemicals. In turn, the second part is devoted to several new CC bond formation methodologies using the most ubiquitous transition metal, iron, as a catalyst, and using the ubiquitous CH bond as the coupling partner.