This review deals with the different accesses leading to the dibenzofuran nucleus in the last fifteen years.
Regioselective [3 + 3] benzannulation reactions of aurone derivatives and 1,3-bisnucleophiles afford substituted dibenzofurans. Arylsulfone-bearing nucleophiles react via elimination whereas glutaconate reacts via an air-oxidation pathway.
A general and authoritative literature overview on Pd-catalyzed cross-dehydrogenative coupling reactions of (hetero)arenes from the origins to 2023, where not only the synthetic aspects were described but also the most relevant mechanistic features.
This review shows that biomarkers could be used to establish the sedimentary depositional environments, redox conditions, and organic matter enrichments of shales that are critical to the deep energy exploitation.
Emerging metal-catalysed intramolecular X–CH activation strategies enable efficient, step-economical access to π-conjugated heteroaromatics for next-generation organic materials.