Rhodium-Catalyzed Stitching Reactions for the Facile Synthesis of Extended π-Conjugated Compounds

Abstract π-Conjugated compounds have been extensively investigated as potentially useful organic materials, however, accessible structures are currently still limited, mainly due to the lack of efficient synthetic methods. In this regard, a new synthetic strategy termed the ‘stitching reaction’ has been recently devised that allows facile access to novel types of bridged π-conjugated compounds in a convergent manner under rhodium catalysis. In addition, this synthetic strategy has been successfully applied to the preparation of π-conjugated polymers that cannot be synthesized via existing methods. Herein an overview that includes the physical properties of newly synthesized π-conjugated compounds is provided. 1 Introduction 2 Synthesis of Novel Fused Oligosiloles by the Stitching Reaction and Their Properties 3 Synthesis of Hydrocarbon-Based Fused π-Conjugated Compounds by the Stitching Reaction 4 Synthesis of New π-Conjugated Polymers by Stitching Polymerization 5 Conclusion