Abstract
Sulfur-containing functional π-conjugated cores play key roles in materials science,
mostly due to their unique electrochemical and photophysical properties. Among these,
the excellent electron donor tetrathiafulvalene (TTF) has occupied a central position
since the emergence of organic electronics. Peripheral C–H modification of this highly
useful sulfur-containing motif has resulted in the efficient creation of new molecules
that expand the applications of TTFs. This Short Review begins with the development
of the palladium-catalyzed direct C–H arylation of TTF. Subsequently, it summarizes
the applications of this efficient C–H transformation for the straightforward synthesis
of useful TTF derivatives that are employed in a variety of research fields, demonstrating
that the development of a new reaction can have a significant impact on chemical science.
1 Introduction
2 Development of the Palladium-Catalyzed Direct C–H Arylation of TTF
3 Synthesis of TTF-Based Tetrabenzoic Acid and Tetrapyridine for MOFs
4 Synthesis of TTF-Based Tetrabenzaldehyde and Tetraaniline for COFs
5 Tetraarylation of TTFAQ
6 Synthesis of Multistage-Redox TTF Derivatives
7 Miscellaneous Examples
8 Conclusions
Key words
C–H arylation - tetrathiafulvalene - sulfur - palladium catalysis - metal-organic
framework - covalent organic framework - supramolecular chemistry - redox-active material