Cyclopropanation reactions of carbenes with arenes provide a straightforward pathway to
norcaradienes or cycloheptatrienes. This reaction normally requires harsh reaction …

The tropylium ion is a non-benzenoid aromatic species that works as a catalyst. This
chemical entity brings about a large number of organic transformations, such as …

Azulene-based conjugated systems are of great interests due to their unusual structures and
photophysical properties. Incorporation of a transition metal into azulene skeleton presents …

Tunable electron‐accepting properties of the cationic phosphorus center, its geometry and
unique preparative chemistry that allows combining this unit with diversity of π‐conjugated …

Herein, we describe the application of a nonbenzenoid aromatic carbocation, namely
tropylium, as an organic Lewis acid catalyst in O–H functionalization reactions of …

The carbonyl-alkyne metathesis (CAM) reaction is a versatile, stereoselective, and atom-
economical method to access a diverse range of α, β-unsaturated carbonyl compounds …

The carbonyl–olefin metathesis reaction could facilitate rapid functional group
interconversion and allow construction of complicated organic structures. Herein, we …

The alternating physical properties, especially melting points, of α, ω-disubstituted n-alkanes
and their parent n-alkanes had been known since Baeyer's report in 1877. There is …

The balance between strain relief and aromatic stabilization dictates the form and function of
non-planar π-aromatics. Overcrowded systems are known to undergo geometric …

The retro-Claisen reaction is frequently used in organic synthesis to access ester derivatives
from 1, 3-dicarbonyl precursors. The C–C bond cleavage in this reaction is usually promoted …